Category
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AnimalsTranscript
00:00:00you
00:00:30are welcome to all of you in your family, so how are you guys, tell me Radhe Radhe
00:00:43brother Radhe Radhe, you are fine, you are in fun, let's go brother, good evening good
00:00:54evening good evening to all of you, good evening to all of you, how are you guys, you are fine,
00:01:01you are in fun, let's go brother, so CPO has come to you, my brother, now the result of
00:01:09tier 1 and now I was making a video of it, actually our life is also very stressful,
00:01:14teachers are also fine, sometimes a notification comes, sometimes another one comes, so just
00:01:205 minutes before the start of the class, the notification of CPO tier 1 of 2024 came and
00:01:25the cut-off has gone down a lot, I have just made a video on it and I have also told that
00:01:30the cut-off this time is very less, okay, you can say that I have uploaded it on telegram
00:01:37too, so the children who are there, they will see once, there is a male cut-off, there is
00:01:42a female cut-off, okay, and the second biggest thing to do here is that the children who
00:01:46have been selected, their whole list has been given, like if we talk about Delhi Police,
00:01:51you see this first, the female cut-off has gone to 135 and the male cut-off has gone
00:01:57to 119 of UR, 111 of EWS, 113 of OBC, so the predictions that people were putting about
00:02:04a lot of cut-off, the cut-off actually did not happen there, okay, my brother, the cut-off
00:02:12has not gone that much, so you people do not need to worry, and the children who have
00:02:17given my brother in CPO, then they do not need to worry too much, now they can easily
00:02:22prepare for physical, so now we have put its video in detail on our channel on Aditya
00:02:27Ranjan Sir Concepts channel, whoever wants to know about it, wants to understand, they
00:02:31can easily go there and watch the video, very good brother, so let's start our session
00:02:40and whenever you need any notification, immediately join our telegram Maths by Aditya Ranjan,
00:02:46if any notification comes in India, then first of all we put it here and in a very authentic
00:02:51way so that you do not need to worry, you do not get into the wrong pdf, you do not
00:02:56get lost here and there, you do not get worried here and there, okay, so you always keep
00:03:01joining this, which is our main telegram Maths by Aditya Ranjan, let's come here, so we
00:03:05start our session and the things that I had asked you to do, now we understand the
00:03:10rest of it, okay, I hope that time and work will be cleared to you in a very good way
00:03:17and there will be no problem anywhere, so we have done up to 72 number question, now
00:03:22we have to understand the rest of it, okay, so how are you guys, tell me brother, be good,
00:03:30have fun, be healthy, tell me, let's go brother, everyone is absolutely great, so let's start
00:03:40the session and had done up to 72, so let's do the questions before 73, so read the 73
00:03:46number question once, what was said, it was said that A and B can finish a task in 45
00:03:51days and then it was said that they work on it for 35 days and then leave A, B does the
00:03:57rest of the work in more than 24 days, in how many days can B alone finish the entire
00:04:02work, it is a very beautiful question, you see here that A and B can complete a task
00:04:07together in 45 days, okay, how many days can they do together, so they can complete it
00:04:12in 45 days and after that it was said that they worked for 35 days and then left A, the
00:04:18rest of the work has been completed by B alone in 24 days, so how many days will B complete
00:04:24the task, I have told you such questions through MDH concept that see how such questions
00:04:29are made for us, so first of all you have to take this here that total work, there are
00:04:34two ways to get the total work done, the first way friends here we have is that either we
00:04:39get A and B together and get the final task done in 45 days, so we will say here that
00:04:44see how many days did A and B do the work, so A and B have done the work in 45 days,
00:04:50okay, then after that what was said here, then it was said that see the work can be
00:04:55done in two ways, method number one is to call A and B and get it done in 45 days, and
00:05:00method number two is that they worked for 35 days and then left A, which means how many
00:05:05days did these people work here, so these people worked for 35 days and then left A,
00:05:10and after leaving B alone in 24 days, then what was said here that the rest of the work
00:05:15is done by B and how many days have been done in 24 days, okay, so these are the small
00:05:20things that you have to keep in mind, then we will also tell you the short approach of
00:05:25this, so here B does it in how many days, it does it in 24 days, okay, now what happens
00:05:30here, how do children make mistakes, what do they do, first of all, write those small
00:05:35things here like this, that sir, how many days did A and B do the work, how many days
00:05:40did A and B do the work, how many days did A and B do the work, how many days did A and
00:05:45B do the work, how many days did A and B do the work, how many days did A and B do the
00:05:50work, how many days did A and B do the work, how many days did A and B do the work, how
00:05:55many days did A and B do the work, how many days did A and B do the work, how many days
00:06:00did A and B do the work, how many days did A and B do the work, how many days did A and
00:06:05B do the work, how many days did A and B do the work, how many days did A and B do the
00:06:10work, how many days did A and B do the work, how many days did A and B do the work, how
00:06:15many days did A and B do the work, how many days did A and B do the work, how many days
00:06:20did A and B do the work, how many days did A and B do the work, how many days did A and
00:06:25B do the work, how many days did A and B do the work, how many days did A and B do the
00:06:30work, how many days did A and B do the work, how many days did A and B do the work, how
00:06:35many days did A and B do the work, how many days did A and B do the work, how many days
00:06:40did A and B do the work, how many days did A and B do the work, how many days did A and
00:06:45B do the work, how many days did A and B do the work, how many days did A and B do the
00:06:50work, how many days did A and B do the work, how many days did A and B do the work, how
00:06:55many days did A and B do the work, how many days did A and B do the work, how many days
00:07:00did A and B do the work, how many days did A and B do the work, how many days did A and
00:07:05B do the work, how many days did A and B do the work, how many days did A and B do the
00:07:10work, how many days did A and B do the work, how many days did A and B do the work, how
00:07:15many days did A and B do the work, how many days did A and B do the work, how many days
00:07:20did A and B do the work, how many days did A and B do the work, how many days did A and
00:07:25B do the work, how many days did A and B do the work, how many days did A and B do the
00:07:30work, how many days did A and B do the work, how many days did A and B do the work, how
00:07:35many days did A and B do the work, how many days did A and B do the work, how many days
00:07:40did A and B do the work, how many days did A and B do the work, how many days did A and
00:07:45B do the work, how many days did A and B do the work, how many days did A and B do the
00:07:50work, how many days did A and B do the work, how many days did A and B do the work, how
00:07:55many days did A and B do the work, how many days did A and B do the work, how many days
00:08:00did A and B do the work, how many days did A and B do the work, how many days did A and
00:08:05B do the work, how many days did A and B do the work, how many days did A and B do the
00:08:10work, how many days did A and B do the work, how many days did A and B do the work, how
00:08:15many days did A and B do the work, how many days did A and B do the work, how many days
00:08:20did A and B do the work, how many days did A and B do the work, how many days did A and
00:08:25B do the work, how many days did A and B do the work, how many days did A and B do the
00:08:30work, how many days did A and B do the work, how many days did A and B do the work, how
00:08:35many days did A and B do the work, how many days did A and B do the work, how many days
00:08:40did A and B do the work, how many days did A and B do the work, how many days did A and
00:08:45B do the work, how many days did A and B do the work, how many days did A and B do the
00:08:50work, how many days did A and B do the work, how many days did A and B do the work, how
00:08:55many days did A and B do the work, how many days did A and B do the work, how many days
00:09:00did A and B do the work, how many days did A and B do the work, how many days did A and
00:09:05B do the work, how many days did A and B do the work, how many days did A and B do the
00:09:10work, how many days did A and B do the work, how many days did A and B do the work, how
00:09:15many days did A and B do the work, how many days did A and B do the work, how many days
00:09:20did A and B do the work, how many days did A and B do the work, how many days did A and
00:09:25B do the work, how many days did A and B do the work, how many days did A and B do the
00:09:30work, how many days did A and B do the work, how many days did A and B do the work, how
00:09:35many days did A and B do the work, how many days did A and B do the work, how many days
00:09:40did A and B do the work, how many days did A and B do the work, how many days did A and
00:09:45B do the work, how many days did A and B do the work, how many days did A and B do the
00:09:50work, how many days did A and B do the work, how many days did A and B do the work, how
00:09:55many days did A and B do the work, how many days did A and B do the work, how many days
00:10:00did A and B do the work, how many days did A and B do the work, how many days did A and
00:10:05B do the work, how many days did A and B do the work, how many days did A and B do the
00:10:10work, how many days did A and B do the work, how many days did A and B do the work, how
00:10:15many days did A and B do the work, how many days did A and B do the work, how many days
00:10:20did A and B do the work, how many days did A and B do the work, how many days did A and
00:10:25B do the work, how many days did A and B do the work, how many days did A and B do the
00:10:30work, how many days did A and B do the work, how many days did A and B do the work, how
00:10:35many days did A and B do the work, how many days did A and B do the work, how many days
00:10:40did A and B do the work, how many days did A and B do the work, how many days did A and
00:10:45B do the work, how many days did A and B do the work, how many days did A and B do the
00:10:50work, how many days did A and B do the work, how many days did A and B do the work, how
00:10:55many days did A and B do the work, how many days did A and B do the work, how many days
00:11:00did A and B do the work, how many days did A and B do the work, how many days did A and
00:11:05B do the work, how many days did A and B do the work, how many days did A and B do the
00:11:10work, how many days did A and B do the work, how many days did A and B do the work, how
00:11:15many days did A and B do the work, how many days did A and B do the work, how many days
00:11:20did A and B do the work, how many days did A and B do the work, how many days did A and
00:11:25B do the work, how many days did A and B do the work, how many days did A and B do the
00:11:30work, how many days did A and B do the work, how many days did A and B do the work, how
00:11:35many days did A and B do the work, how many days did A and B do the work, how many days
00:11:40did A and B do the work, how many days did A and B do the work, how many days did A and
00:11:45B do the work, how many days did A and B do the work, how many days did A and B do the
00:11:50work, how many days did A and B do the work, how many days did A and B do the work, how
00:11:55many days did A and B do the work, how many days did A and B do the work, how many days
00:12:00did A and B do the work, how many days did A and B do the work, how many days did A and
00:12:05B do the work, how many days did A and B do the work, how many days did A and B do the
00:12:10work, how many days did A and B do the work, how many days did A and B do the work, how
00:12:15many days did A and B do the work, how many days did A and B do the work, how many days
00:12:20did A and B do the work, how many days did A and B do the work, how many days did A and
00:12:25B do the work, how many days did A and B do the work, how many days did A and B do the
00:12:30work, how many days did A and B do the work, how many days did A and B do the work, how
00:12:35many days did A and B do the work, how many days did A and B do the work, how many days
00:12:40did A and B do the work, how many days did A and B do the work, how many days did A and
00:12:45B do the work, how many days did A and B do the work, how many days did A and B do the
00:12:50work, how many days did A and B do the work, how many days did A and B do the work, how
00:12:55many days did A and B do the work, how many days did A and B do the work, how many days
00:13:00did A and B do the work, how many days did A and B do the work, how many days did A and
00:13:05B do the work, how many days did A and B do the work, how many days did A and B do the
00:13:10work, how many days did A and B do the work, how many days did A and B do the work, how
00:13:15many days did A and B do the work, how many days did A and B do the work, how many days
00:13:20did A and B do the work, how many days did A and B do the work, how many days did A and
00:13:25B do the work, how many days did A and B do the work, how many days did A and B do the
00:13:30work, how many days did A and B do the work, how many days did A and B do the work, how
00:13:35many days did A and B do the work, how many days did A and B do the work, how many days
00:13:40did A and B do the work, how many days did A and B do the work, how many days did A and
00:13:45B do the work, how many days did A and B do the work, how many days did A and B do the
00:13:50work, how many days did A and B do the work, how many days did A and B do the work, how
00:13:55many days did A and B do the work, how many days did A and B do the work, how many days
00:14:00did A and B do the work, how many days did A and B do the work, how many days did A and
00:14:05B do the work, how many days did A and B do the work, how many days did A and B do the
00:14:10work, how many days did A and B do the work, how many days did A and B do the work, how
00:14:15many days did A and B do the work, how many days did A and B do the work, how many days
00:14:20did A and B do the work, how many days did A and B do the work, how many days did A and
00:14:25B do the work, how many days did A and B do the work, how many days did A and B do the
00:14:30work, how many days did A and B do the work, how many days did A and B do the work, how
00:14:35many days did A and B do the work, how many days did A and B do the work, how many days
00:14:40did A and B do the work, how many days did A and B do the work, how many days did A and
00:14:45B do the work, how many days did A and B do the work, how many days did A and B do the
00:14:50work, how many days did A and B do the work, how many days did A and B do the work, how
00:14:55many days did A and B do the work, how many days did A and B do the work, how many days
00:15:00did A and B do the work, how many days did A and B do the work, how many days did A and
00:15:05B do the work, how many days did A and B do the work, how many days did A and B do the
00:15:10work, how many days did A and B do the work, how many days did A and B do the work, how
00:15:15many days did A and B do the work, how many days did A and B do the work, how many days
00:15:20did A and B do the work, how many days did A and B do the work, how many days did A and
00:15:25B do the work, how many days did A and B do the work, how many days did A and B do the
00:15:30work, how many days did A and B do the work, how many days did A and B do the work, how
00:15:35many days did A and B do the work, how many days did A and B do the work, how many days
00:15:40did A and B do the work, how many days did A and B do the work, how many days did A and
00:15:45B do the work, how many days did A and B do the work, how many days did A and B do the
00:15:50work, how many days did A and B do the work, how many days did A and B do the work, how
00:15:55many days did A and B do the work, how many days did A and B do the work, how many days
00:16:00did A and B do the work, how many days did A and B do the work, how many days did A and
00:16:05B do the work, how many days did A and B do the work, how many days did A and B do the
00:16:10work, how many days did A and B do the work, how many days did A and B do the work, how
00:16:15many days did A and B do the work, how many days did A and B do the work, how many days
00:16:20did A and B do the work, how many days did A and B do the work, how many days did A and
00:16:25B do the work, how many days did A and B do the work, how many days did A and B do the
00:16:30work, how many days did A and B do the work, how many days did A and B do the work, how
00:16:35many days did A and B do the work, how many days did A and B do the work, how many days
00:16:40did A and B do the work, how many days did A and B do the work, how many days did A and
00:16:45B do the work, how many days did A and B do the work, how many days did A and B do the
00:16:50work, how many days did A and B do the work, how many days did A and B do the work, how
00:16:55many days did A and B do the work, how many days did A and B do the work, how many days
00:17:00did A and B do the work, how many days did A and B do the work, how many days did A and
00:17:05B do the work.
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00:21:58It will take 15 days to complete B.
00:22:01According to 12 and 15,
00:22:03if you take its efficiency,
00:22:05total work, it will be 60.
00:22:07If you divide 60 by 12, it will be 5.
00:22:09If you divide 60 by 15, it will be 4.
00:22:12If you see here,
00:22:14B's capacity is 4.
00:22:16B's capacity is 4.
00:22:18If you add 5 to 4, it will be 5.
00:22:20If you add 1 to 4, it will be 5.
00:22:22Because in the question,
00:22:24it was said that B's capacity should be more.
00:22:26If you see here,
00:22:28B's capacity is more.
00:22:30If you see here,
00:22:32half of the work is done by A,
00:22:34then the number of days of A.
00:22:36Half of the work is done by B,
00:22:38then the number of days of B.
00:22:40If we add both, it should be 25.
00:22:42Time is equal to work upon efficiency.
00:22:44Half of 60 is 30.
00:22:46Here 30 work is done by A.
00:22:48Here 30 work is done by A,
00:22:50then its capacity is 1.
00:22:52Here 30 work is done by B,
00:22:54then its capacity is 4.
00:22:56Do you think that
00:22:58if we add 30 to 4,
00:23:00it will be 25.
00:23:02It will not come in any birth.
00:23:04Because it is 30.
00:23:06If we add anything in 30,
00:23:08it will be more than 30.
00:23:10This is not possible.
00:23:12The option we have taken,
00:23:14is wrong.
00:23:16I said that I am taking wrong option
00:23:18so that we can satisfy you.
00:23:20So that we can make you understand
00:23:22where we are going wrong.
00:23:24Let's talk about next.
00:23:26We take option C.
00:23:28According to C,
00:23:30let's assume that A and B
00:23:32are doing some work in how many days.
00:23:34A and B are doing some work in 12 days.
00:23:36B is doing some work in 20 days.
00:23:38B is doing some work in 20 days.
00:23:40B is doing some work in 20 days.
00:23:42The LCM of 12 and 20 is 60.
00:23:44The LCM of 12 and 20 is 60.
00:23:46If we divide it by 12, it is 5.
00:23:48If we divide it by 12, it is 3.
00:23:50The value of B is 3.
00:23:52How many we add in 3,
00:23:54it will be 5.
00:23:56We have to add 2 in 3.
00:23:58We have to add 2 in 3.
00:24:00We have to satisfy two lines of question.
00:24:02The first line is
00:24:04what is said here.
00:24:06See in the question.
00:24:08It is said that
00:24:10if B is more efficient than A,
00:24:12then I am already satisfied
00:24:14that B is more efficient than A.
00:24:16The second thing I have to satisfy
00:24:18is that it takes 25 days
00:24:20to satisfy both.
00:24:22Time taken by A and time taken by B
00:24:24should be equal to 25.
00:24:26When we go to A,
00:24:28when we go to A,
00:24:30A will do half of 60
00:24:32and half of 30.
00:24:34B will do this much.
00:24:36A will do this much.
00:24:38A will do this much.
00:24:40A will do this much.
00:24:42Time is equal to workup on efficiency.
00:24:44Time is equal to workup on efficiency.
00:24:46When we divide here,
00:24:48it will be 15.
00:24:50When we divide here, it will be 10.
00:24:52In total, it will be 25.
00:24:54Both worked together.
00:24:56This option is satisfied.
00:24:58This means that my answer is
00:25:00correct.
00:25:02Whenever such questions come in the paper,
00:25:04it is important to use this option.
00:25:06It is important to use this option.
00:25:08We have to see what is said and how it is said.
00:25:10We have to see what is said and how it is said.
00:25:12Amit Kumar,
00:25:14give your WhatsApp number.
00:25:16I will contact you.
00:25:18You will be solved.
00:25:20Let's move on.
00:25:22Next, let's see what is said in question 76.
00:25:24Next, let's see what is said in question 76.
00:25:26Sharan and Mayuk
00:25:28working together can complete a task in 18 days.
00:25:30We have two people.
00:25:32We have Sharan and Mayuk.
00:25:34They complete the task in 18 days.
00:25:36However, Mayuk work alone and leave
00:25:38after completing ⅓ of the task.
00:25:40After that,
00:25:42And because of this, both of them do the work together in 40 days.
00:25:46How many days would Sharan alone have taken to do the job if Mayukh has worked faster than Sharan?
00:25:51When I did this question in the previous batches, I used to think that
00:25:57one question is not enough to give clarity to the students.
00:26:01So let's do one more question on this.
00:26:05That's why I put one more question for you.
00:26:07Exactly on the same pattern.
00:26:09There were two people there who worked together for 12 days and half-half for 25 days.
00:26:15There are two people here as well.
00:26:17If they work together, like Sharan and Mayukh,
00:26:20if there were 12 days there, how many days are there here? 18 days.
00:26:24Both of them used to work half-half there, so it took 25 days.
00:26:28Here they don't work half-half.
00:26:30Here it is said, my brother, that Mayukh is here and Mayukh is here.
00:26:36If we talk about Mayukh, he works half-half and leaves half-half.
00:26:40He is not alone here.
00:26:42This is Mayukh.
00:26:44What has Mayukh done here?
00:26:46Correct it in Hindi.
00:26:48But Mayukh works half-half.
00:26:50Only Mayukh works half-half and then leaves half-half.
00:26:55After this, Sharan does the work and the remaining two-thirds.
00:26:58Because he has done half-half, so he will do the remaining two-thirds.
00:27:02And in this way, as the work was happening there in 25 days,
00:27:05here the work will be done in 40 days.
00:27:08There, both of them used to do half-half, so it took 25 days.
00:27:11Here Mayukh does one-third work and Sharan does two-thirds work, so it will take 40 days.
00:27:15In the question, it was said that Mayukh works faster than Sharan.
00:27:18How many days will Sharan finish alone?
00:27:21I gave a hint in the previous question that such questions go by option.
00:27:25And which option will you pick first in the option?
00:27:28So you will give priority to that option first,
00:27:30with which it will be easy to take LCM and here it will be 0 or 5.
00:27:34I can collaborate 30 with 18 or I will like to take 72 with 18.
00:27:40The reason to take 72 here is that LCM will come very easily with it.
00:27:46So let's go, first of all, let's pick 72 and see.
00:27:50Pick 72 and see, I think this is a little better data.
00:27:53Let's see once.
00:27:55So as I saw option number C, so how will I pick option too?
00:27:58So Sharan and Mayukh, so if we talk about Sharan and Mayukh,
00:28:02how many days are they doing a task, so 18 days.
00:28:05And after that, it was said in the question,
00:28:07if Mayukh had worked faster than Sharan, sorry,
00:28:10it was said in the question, how many days would Sharan alone have taken to do?
00:28:15How many days will Sharan do that task?
00:28:17So let's assume that Sharan has done that task in 72 days.
00:28:20Let's assume that Sharan has done that task in 72 days.
00:28:26Let's assume this.
00:28:28So how much will be the LCM of 18 and 72 here? 72.
00:28:314 times of 18, 1 times of 72.
00:28:34Okay, so if the value of S is 1 here, then the value of S will be 1 here too.
00:28:39And how many will be added in 1, then 4 will come,
00:28:42that is, the value of M will be 3.
00:28:44How many will be added in 1, then 4 will come,
00:28:46that is, the value of M will be 3.
00:28:48Two things have to be satisfied here.
00:28:50Point number 1, Mayukh had worked faster.
00:28:53That is, the one who works fast has more capacity.
00:28:56So Mayukh has more capacity.
00:28:58This is satisfied.
00:28:59And the second most interesting thing, friends, is here.
00:29:03And what is here, my brother?
00:29:05It is said that Mayukh has worked here and completed the 1 third task here.
00:29:10And the rest, Sharan has worked here, the remaining.
00:29:13And this way it takes him 40 days.
00:29:15That is, if we talk, then what was said to us in the question,
00:29:18that is, the time of Mayukh and then the time of Sharan.
00:29:22How many days have been taken by combining both, then 40.
00:29:25Often we have seen that what happens at the same time?
00:29:28There is efficiency in work-upon.
00:29:30There is ability to work.
00:29:31So how much work do we have?
00:29:33So the first person who will work here, this work, this is 72.
00:29:37And how much of this 72, my brother, then 1 third.
00:29:39And the second person who will work, how much of this 72, my brother, here?
00:29:43Then 2 thirds.
00:29:44Understood?
00:29:45He will do 1 third of this 72, he will do 2 thirds of this 72.
00:29:48You will say, sir, 2 thirds were not given.
00:29:50Where did you pick this up?
00:29:51When 1 work is done in 2-3, then only 2 work will be left in 3.
00:29:55Like if 1 by 4 work has been done somewhere.
00:29:58So what will the next person do?
00:30:00Subtract 1 from 4, 3 by 4 will work.
00:30:02Somewhere 1 by 6 work has been done.
00:30:04So what will the next person do?
00:30:05Subtract 1 from 6, 5 by 6 will work.
00:30:07Somewhere 3 by 7 work has been done.
00:30:09So how much work will the next person do?
00:30:11Subtract 3 from 7, 4 by 7 will work.
00:30:13This is how we often write here.
00:30:16So what did I say here?
00:30:18Time is equal to efficiency in work upon.
00:30:21So if you see, what did you write here?
00:30:23Now efficiency.
00:30:24What is the efficiency of my work?
00:30:26So the efficiency of my work is 3.
00:30:28And here it is the time of refuge.
00:30:30So what is the efficiency of refuge?
00:30:32So it is 1.
00:30:33We have to add this and see if it is coming 40.
00:30:36So I said, okay, sir, we will add it once and we will see here.
00:30:40Now look here, so you will say, sir, we cut it from 3 and how many times?
00:30:45If we cut it from 3, then how many times?
00:30:488 times.
00:30:49If we cut it from 3, then sir, how many times will we have this?
00:30:5326 times.
00:30:54So here 26 into 2 will be 52.
00:30:56And if you add 8 to 52, it will be 60.
00:30:59And this is your 40.
00:31:01So this is wrong.
00:31:02This option is completely wrong.
00:31:04We can't pick this.
00:31:05I understand that this option is completely wrong.
00:31:08We can't pick 72.
00:31:09So if we can't pick 72, then what will we pick?
00:31:12We have a lot of 60.
00:31:14So now I have an option here to go to 45 or 30.
00:31:18Pick any of these options.
00:31:20Do you understand that pick 45 or pick 30?
00:31:23So we said we will pick 45.
00:31:25And we will pick 45 and see.
00:31:27Look, the more wrong options I will make you do, the more benefit you will get.
00:31:31Because you will read the question as many times and the more your revision will be.
00:31:35Understood about it.
00:31:36Now let's go straight and pick 45 and see.
00:31:39Dude, it's coming a lot of days.
00:31:42I think it was 40 and it has reached 60 from here.
00:31:45So that's why we pick 45.
00:31:47Now if we pick 45, then the value of Sharan plus Mayup that I had given in the question earlier is 18.
00:31:53And after that, the value of Sharan that I had picked 72, let's pick 45 here.
00:31:5818 and 45 are very easy to calculate.
00:32:0190 is 2 times 18.
00:32:03Sorry, 18 is 5 times and 45 is 2 times.
00:32:06So what is the value of S?
00:32:08It is 2.
00:32:09So S is 2.
00:32:10How much will we add in 2?
00:32:11It will be 5.
00:32:12So if we add 3 in 2, it will be 5.
00:32:14So we have to work in the same way.
00:32:16We have to add this time and this time and get 40.
00:32:19So the time is equal here.
00:32:20Work upon efficiency.
00:32:21So the first person who will work will be one-third of 72.
00:32:24And the second person who will work will be two-thirds of 72.
00:32:28The one who will work one-third of 72 is Mayup.
00:32:31So that's why we will divide it by Mayup's efficiency here.
00:32:36And the one who will work two-thirds of 72 will be Sharan.
00:32:39So we will divide it by 2.
00:32:40Now let's see.
00:32:41If you divide it by 3, it will be 24 times.
00:32:44And if you divide it by 3, it will be 8 times.
00:32:47If you divide it by 3, it will be 24 times.
00:32:50And subtract it from here.
00:32:52Okay.
00:32:53Did we write it correctly or not?
00:32:55From 3 to here, it is 3 times 9 is 6.
00:32:573 times 4 is 12.
00:32:59So this is not possible even at 45.
00:33:02It is becoming very less at 45.
00:33:0332 days are coming.
00:33:05Okay.
00:33:08Let's see for a second.
00:33:09The value of S plus M has become so much that it has become 2 times of 45.
00:33:12So if it becomes 2, then my brother has become 3.
00:33:14In the question, it is said that Mayup will work alone and leave after completing one-third.
00:33:19So what we will divide here, we will divide it by Mayup.
00:33:22That time is equal to work upon efficiency is not better.
00:33:25And the rest is said that Sharan will take over and complete the remaining work by himself.
00:33:29So Sharan has done the rest of the work here by two-thirds and with his own ability.
00:33:34So if you divide it by 3 here, then how much will come?
00:33:37You will divide it by 2.
00:33:38Brother, this 32 is coming for you.
00:33:40It means that you have also taken this option wrong here.
00:33:43Now 20 will not come.
00:33:4424 will come.
00:33:45Where brother?
00:33:49Where are you saying that 24 has to come?
00:34:05Where are you saying this?
00:34:12Instead of 72, it will be 90.
00:34:14Where will it be brother?
00:34:15It will be 90.
00:34:16Where have we made a mistake, brother?
00:34:18We have taken 18 only.
00:34:19After that, we have taken 45.
00:34:21So 18, 95, 45, 99.
00:34:23It is correct.
00:34:2418 is 5, 45 is 2.
00:34:26We are adding 3 in 2.
00:34:28So we are adding 3 in 2.
00:34:3018 is 5, 45 is 2.
00:34:32We are adding 3 in 2.
00:34:34and
00:34:35Okay.
00:34:36Okay.
00:34:37Okay.
00:34:38Okay.
00:34:39Okay.
00:34:40The 72 we took here, we took this a little wrong.
00:34:42Because the work here has changed.
00:34:44Like what did we do?
00:34:45We took it according to the work of the person behind.
00:34:47This is a little mistake.
00:34:48So if you look at the question, then it is said here in the question, brother,
00:34:52that Mayuk's time is here and Sharan's time is here.
00:34:55How much should come by combining both?
00:34:57So 40 should come by combining both.
00:34:59Mayuk's work here is one third of this work.
00:35:03So we will say, sir, this is doing 1 by 3 work of 90.
00:35:06And Sharan's work here is two thirds of 90.
00:35:10Now if we talk about Mayuk's case, then we will divide it by its power here.
00:35:14And in the case of Sharan, we will divide it by its power here.
00:35:17If you look here, then you will say, sir, see 3 and 3, how many times do you cut it from 9?
00:35:22In 10 times.
00:35:23And after that, your 2 ends with 2, your 30 ends with 3, so it will cut in 30 times.
00:35:2810 times 30 is equal to 40 for us.
00:35:31And that is why our option number, which is B, is absolutely true for us.
00:35:36So what was said in the question, one third of the work.
00:35:38It is related to our work, not to the other option.
00:35:41Keep this in mind.
00:35:42When you picked that option, it was right.
00:35:44And when you picked this, it will be right according to you.
00:35:47So the work you will do, you will do it on its basis.
00:35:50So keep this little thing in mind that whenever such a question comes in the paper,
00:35:54you will go by option and you will be able to solve it by going by option.
00:35:58It is clear.
00:35:59Let's go to the next question today.
00:36:01Let's see the next question here.
00:36:03What is the next question here?
00:36:05So the next question is in front of you.
00:36:07P can finish a work in 18 days.
00:36:09When he had work for 5 days, Q joined him.
00:36:11If both of them together can complete the remaining work in 9,
00:36:14how many days can Q alone finish if they have no work?
00:36:17The same thing that I taught you behind.
00:36:20And what I read behind is that P can complete this work in 18 days.
00:36:24So the way to get the total work done here is to call P and get him to work for 18 days.
00:36:31Either get this work done or get this work done in another way.
00:36:36And how?
00:36:37So after doing his work for 5 days, Q joins him in this work.
00:36:42And both of them together complete the remaining work in so many days.
00:36:46Either get him to work for 18 days or get him to work for 5 days from P.
00:36:51And after that, P joins Q here.
00:36:56And they do the remaining work in 13 divided by 5 days.
00:36:59They do the remaining work in so many days.
00:37:02I repeat again.
00:37:03P can do some work in 18 days.
00:37:05Either he can do it or he will do it in 5 days.
00:37:08And they will do the remaining work in so many days.
00:37:11Now see a small logic from here.
00:37:13If you subtract 5P from 18P, you will also get 13.
00:37:17And here it will be P plus Q into 13 divided by 5.
00:37:21If I wanted, I could have written it directly.
00:37:23But I said, let it be.
00:37:25No problem, let's write it here.
00:37:27Your 13 will end from 13.
00:37:29Ultimately, what will happen here is that the value of 5P is equal to P plus Q.
00:37:35That is, here you will say that only 4P will be equal to Q.
00:37:39So from here we will get the value of P upon Q.
00:37:42And that will be our 1 upon 4.
00:37:45This will be 1 upon 4.
00:37:47Now in the question, it is said that
00:37:49In how many days Q will and can complete this much of the same work?
00:37:53Why will it do so much work in so many days?
00:37:56So often we know this thing that
00:37:58Sir, what is equal to time?
00:37:59It is efficiency in work upon.
00:38:01How much work do we have?
00:38:03So if you put it in this, work will come out.
00:38:05Or if you put it in this, work will come out.
00:38:07So let's put it in this.
00:38:08If the value of P is 1, then 1 into 18.
00:38:10This is my work.
00:38:11If you want to do all the work, then you will say no.
00:38:13Only 2 by 3 work.
00:38:15So this work has to do 2 by 3 work.
00:38:18And if you want to do this work from whom, then you will say from Q.
00:38:20And how much is the value of Q?
00:38:22It is 4.
00:38:23So the value of Q is 4 here.
00:38:25So how many times did we cut from 3?
00:38:266.
00:38:27Divide 12 by 4.
00:38:29How much to come?
00:38:303 has to come.
00:38:31So which will be the right option?
00:38:32D for Dev Sena.
00:38:33So whenever such a question will come in front of you in the paper,
00:38:36small things that a person named P could do a single work in so many days,
00:38:40but he did not do that.
00:38:42He worked for 5 days and then called someone else later.
00:38:45So from there, you take out the efficiency ratio.
00:38:48Whatever work you have to do and whoever you have to do it,
00:38:51divide it and take out your time.
00:38:53Come on, let's talk about the next question.
00:38:56Let's see the next question here.
00:38:57What is said in question number 78?
00:38:59Read a little.
00:39:00It is said that A alone can do so much work in 12 days.
00:39:03B is 25% more efficient than A.
00:39:06C alone can do the same work in 12 days less than B.
00:39:09D is 25% less efficient than C.
00:39:11If they all together do the work in how many work will be completed?
00:39:15Meaning, if you ask me that Sir,
00:39:17tell me such a question in full time and work,
00:39:20which if we read and revise it,
00:39:23then at least my 3-4 concepts will be revised.
00:39:26So here this question 78 is your same question.
00:39:29Stop writing anything in the comment box
00:39:32and bring all the focus, all the knowledge, all the attention on this question.
00:39:37Your attention is on the comment,
00:39:39so mine goes away many times.
00:39:41Then half of my focus is here, half of my focus is here,
00:39:43and I can't explain it.
00:39:45So all my brothers, focus on this question quietly.
00:39:48What is said?
00:39:50Now let's talk about this question.
00:39:52It is a very beautiful question and a very beautiful question.
00:39:54A alone can do so much work in 12 days.
00:39:57So remember, if it takes 6 times of 2 work,
00:40:00that is 12 days,
00:40:02then how much will it take to do 5 work?
00:40:04I had taught this in the first and second class.
00:40:072 times 5 work is this much,
00:40:092 work is 12 days,
00:40:11so 5 work is 30 days.
00:40:13That is, A alone can do 30 days of work.
00:40:16I repeat again,
00:40:18A alone can do 30 days of work.
00:40:20Okay?
00:40:22Write this.
00:40:24Then it was said that
00:40:26B is 25% more capable than A.
00:40:28B is 25% more capable than A.
00:40:32That is, if we talk about A and B here,
00:40:35then this is our A and this is our B.
00:40:38In comparison to A, B is 25% more,
00:40:40that is, it is more than this.
00:40:42So what happened to us?
00:40:44Efficiency happened.
00:40:46If efficiency happened here,
00:40:48then the ratio of efficiency is 4 to 5.
00:40:50So in comparison to A, B is 25% more capable.
00:40:53Look here, it is 25% more than this, it is capable.
00:40:57So if this is your efficiency ratio,
00:40:59then what is the opposite of efficiency?
00:41:01It is time.
00:41:03If we reverse the efficiency of two people,
00:41:05then we will lose time.
00:41:07And why do we need to reverse it?
00:41:09Because if we do not reverse it,
00:41:11then we will not be able to get the time of B.
00:41:13So we will say here that the ratio of time is this.
00:41:15If you look closely,
00:41:17then the time of A is given as 30 days.
00:41:19How much is the time of A?
00:41:21So the time of A is said to take 30 days,
00:41:23that is, 6 times of itself.
00:41:25So this also takes 6 times of itself,
00:41:27that is, my brother, 24 days.
00:41:29You will have to understand this.
00:41:31If the value of 5 in A is 30,
00:41:33then the value of 4 in A will be 24.
00:41:35So here you understand that
00:41:37the number of days of A were given.
00:41:39Relating the days of A,
00:41:41you subtracted the days of B.
00:41:43Like you subtracted the efficiency,
00:41:45you reversed it, the time came.
00:41:47And here, like my brother,
00:41:49the value of 5 was given to you as 30,
00:41:51so if the value of 5 was given to you as 30,
00:41:53then the value of 4 in A will be 6 times of 24.
00:41:55So far you have read the question.
00:41:57Now move ahead here,
00:41:59your matter is over here.
00:42:01It is said that C alone does the same work
00:42:03in 12 days less than B.
00:42:05That is, C alone can do the same work
00:42:07in 12 days less than B.
00:42:09So here you see,
00:42:11this is the days of A,
00:42:13this is the days of B.
00:42:15Now after that, what is next said here?
00:42:17You can read here that
00:42:19it takes 12 days less than B.
00:42:21That is, it takes 12 days less than B.
00:42:23If it takes 12 days less than B,
00:42:25then how many days does it take?
00:42:27It takes 12 days.
00:42:29How many days does it take, my brother?
00:42:31It takes 12 days here.
00:42:33Today I have the time of A,
00:42:35I have the time of B,
00:42:37I have the time of C.
00:42:39There is one person left who does not have time,
00:42:41that is D. We will also read that and find out.
00:42:43Now in the question it is said that
00:42:45D is so much less efficient than C.
00:42:47Like here, their efficiency was reversed
00:42:49and time was taken out,
00:42:51now it is the same time to relate D and C here.
00:42:53So in the question it is said that
00:42:55D is so much less efficient than C.
00:42:57Read it in English.
00:42:59D is 25% less efficient than C.
00:43:01So if there is C here,
00:43:03then there is D here.
00:43:05If C's efficiency is 100,
00:43:07then it is 25 less than it, that is 75.
00:43:09And what is this, then efficiency.
00:43:11Like here it was 25 more than it,
00:43:13so here it is 25 less than it.
00:43:15Subtract from 25 in 4 times,
00:43:17subtract from 25 in 3 times.
00:43:19So as efficiency was reversed here,
00:43:21if efficiency is reversed here,
00:43:23then time will come.
00:43:25Now if you see carefully,
00:43:27like here value of 5 was given as 30,
00:43:29so here 3 is given as 12.
00:43:31See here 3,
00:43:33number of days of C is 12.
00:43:35So this is 4 times of itself,
00:43:37so this will also be 4 times of itself,
00:43:39and 4 times of 4 will be 16 days.
00:43:414 times of 4,
00:43:43I will repeat again,
00:43:454 times of 4 will be 16 days.
00:43:474 times of 4 will be 16 days.
00:43:494 times of 4 will be 16 days.
00:43:51What I don't have today,
00:43:53you tell me.
00:43:55Here I have time of A,
00:43:57I have time of B,
00:43:59I have time of C,
00:44:01I have time of D.
00:44:03Now what my examiner says to me,
00:44:05if they all work together,
00:44:07they can complete the work in how many days.
00:44:09If all people work together,
00:44:11work in love,
00:44:13then how many days will it take.
00:44:15So I said this is work of A,
00:44:17how many days of C is 12 days,
00:44:19and how many days of D is 16 days.
00:44:21If we see here,
00:44:23first of all here,
00:44:25only 12, 16 and 24,
00:44:27these 3 people have to become Calcium 48.
00:44:29And these 3 people have to become Calcium 48,
00:44:31so now here I have a struggle
00:44:33between 30 and 48.
00:44:35If we see here,
00:44:375 times of 6 and 8 times of 6.
00:44:398 times of 30 is 240.
00:44:418 times of 30 is 240.
00:44:43So here it will be 240.
00:44:45So here it will be 240.
00:44:47If we divide 240 by 30,
00:44:49it will be 8,
00:44:51if we divide it by 6,
00:44:53it will be 20,
00:44:55and if we divide it by 15,
00:44:57it will be 15.
00:44:59I think teaching Calcium is my job,
00:45:01because I have taught it long time ago.
00:45:03So if you calculate the time of all people,
00:45:05then it will be equal to
00:45:07work and efficiency.
00:45:09So 35, 35 and 6,
00:45:1141, 41 and 8,
00:45:13it will be 240 upon 49,
00:45:15and where is it?
00:45:1735, 35 and
00:45:1914,
00:45:21it is correct.
00:45:238 times of 24,
00:45:25one second,
00:45:27I made a small mistake in Calcium.
00:45:29I mean in Factor.
00:45:31Make a small change here,
00:45:33it will be 8 times of 30,
00:45:35here it will be 10 times of 30.
00:45:37So you write 10 here,
00:45:39then it will be 20 times of 12,
00:45:4116, 16, 16, 16, 16.
00:45:43So what will we get?
00:45:45Equal time of work upon efficiency.
00:45:47So this is equal to
00:45:49work upon efficiency.
00:45:51For efficiency,
00:45:5320, 30, 40, 45,
00:45:5545 and 8, it is 53.
00:45:57So 240 by 53 is 53.
00:45:59And which option is 53 in 240?
00:46:01Option No. A
00:46:03is our correct answer.
00:46:05So it is very nice,
00:46:07like I said that a single question
00:46:09you can see here, you have made this question in a very good way,
00:46:14you have given the answer of the things in a very good way,
00:46:17that how you first calculated the number of days of A,
00:46:20by relating it with the days of A, you told that this is the day of A,
00:46:23so by relating it with that, you calculated the number of days of B,
00:46:26by subtracting 12 from B, you got the number of days of C,
00:46:29and by doing the relation of efficiency and time of C, you got the number of days of D,
00:46:32when you have A, B, C, D,
00:46:36and by taking the LCM here, you got the total number of days of A, B, C, D.
00:46:39So, isn't it a good question?
00:46:42Tell me quickly, did you enjoy it?
00:46:44Tell me, brother.
00:46:46On such questions, yes, it should be fun.
00:46:49Let's go.
00:46:52Very good.
00:46:58Come, let's move ahead.
00:47:00And here, we will see the next question.
00:47:03What is the next question in front of us?
00:47:05The next question is of your CRPF head constable.
00:47:08And you will have to give some respect to this.
00:47:10You will have to understand what is in the question.
00:47:12Read it.
00:47:13It is said that X and Y together can complete a work in 48 days.
00:47:17They worked together for 15 days, then Z joined them.
00:47:20All the three together completed the remaining work in 22 days.
00:47:24If the work done by Y in 8 days is equal to work done by Z in 12 days,
00:47:28then X alone can complete 1 by 12 part of the original work in.
00:47:32So, this topic of efficiency is a very good topic in itself.
00:47:39In this, small things are done in small ways.
00:47:43And you have to strengthen your understanding.
00:47:48As you see in this question, what is said?
00:47:52In this question, it is said that X and Y can complete a work in 49 days.
00:47:56Read it in English.
00:47:57X and Y together can complete the work in 48 days.
00:48:00In my mind, if I call only two people here,
00:48:04then these people together will complete the work in 48 days.
00:48:09But I did not get such work done.
00:48:13How did I get it done?
00:48:14I said they worked for 15 days.
00:48:16Here they worked for 15 days.
00:48:19So, what do they mean?
00:48:21Here X and Y worked for 15 days.
00:48:24What happened after that?
00:48:27After that, Z joined them.
00:48:31And all the three worked together for 22 days.
00:48:34In Hindi also, Z is included with them.
00:48:36And all three work together for 22 days.
00:48:38So, in this group of X and Y, Z is included.
00:48:45And these people do the remaining work for 22 days.
00:48:47As I told you earlier,
00:48:50I have food for 10 days for A and B.
00:48:54They ate food for 7 days.
00:48:56So, how much is left?
00:48:573 days.
00:48:58Similarly, here,
00:49:00X plus Y is 48 times.
00:49:02X plus Y is 15 times.
00:49:04So, what will be left here?
00:49:07X plus Y will be here.
00:49:08This is more and this is less.
00:49:10So, subtract less from more.
00:49:12Subtract 15 from 48.
00:49:14So, it will be 33 here.
00:49:16And let the remaining work remain here.
00:49:19What is the problem in this?
00:49:21Neither it was far from us nor we will keep it away.
00:49:24What will we do from here?
00:49:26So, we will divide it by 3 times from 11.
00:49:29And divide it by 2 times.
00:49:31Now, we will not take any action or reaction.
00:49:33Now, we will leave this equation here.
00:49:36Now, let's move to the next part of the question.
00:49:38And let's move to the next part.
00:49:41So, what is the next part here?
00:49:43It is said,
00:49:44If the work done by Y in 8 days is equal to work done by Z in 12 days.
00:49:49This is a very lovely question.
00:49:51In the next part, we will learn that
00:49:53the work done by Y in 8 days is equal to the work done by Z in 12 days.
00:49:57Here, we will say that
00:49:59the work done by Y in 8 days is equal to the work done by Z in 12 days.
00:50:08This is not a total work.
00:50:10This is just a relation between Y and Z.
00:50:15It has nothing to do with total work.
00:50:19So, what is said here?
00:50:20The work done by Y in 8 days is equal to the work done by Z in 12 days.
00:50:23So, if we divide it by 2 times from 4 times,
00:50:27and 3 times from 4 times,
00:50:29we will get Y,
00:50:31Z,
00:50:333,
00:50:35and 2.
00:50:37So, the value of Y upon Z is 2 out of 3.
00:50:41The value of Y upon Z is 2 out of 3.
00:50:45This means that the value of Y is 3 and the value of Z is 2.
00:50:48The value of Y is 3 and the value of Z is 2.
00:50:51So, this is given separately in the question.
00:50:53The work done by Y is equal to the work done by Z in 12 days.
00:50:57This means that the relation between Y and Z is telling us the efficiency of the work done by Y.
00:51:03Understood?
00:51:04So, here, we have to take the value of Y as 3.
00:51:06If you don't know the value of X, then leave it.
00:51:09If you want to take the value of Y as 3, then take it.
00:51:11After that,
00:51:13if you don't know the value of X, then leave it.
00:51:15If you want to take the value of Y as 3, then take it.
00:51:17If you want to take the value of Z as 2, then leave it.
00:51:19You have to do this so that you can get the value of X.
00:51:23Now, if you see here,
00:51:25if you say 3X plus 9, then it is 9.
00:51:27If you see here,
00:51:29if you say 2X plus 5, then it is 10.
00:51:32These are small things.
00:51:34If you subtract 2X from 3X, then you get X.
00:51:36If you subtract 9 from 10, then you get 1.
00:51:38The value of X will be 1.
00:51:41Today, I don't have the efficiency of anyone.
00:51:44I have the value of X.
00:51:46I have the value of Y and Z.
00:51:48What do I have to solve in the question?
00:51:50That is,
00:51:52how many days will X do 1 by power of X?
00:51:54That is,
00:51:56I have to find the time of X.
00:51:58The time of X is equal to the work upon efficiency.
00:52:00Now,
00:52:02either subtract this work from here
00:52:04or subtract it from here.
00:52:06This is a small equation.
00:52:08So, let's subtract it from here.
00:52:10X and Y are multiplied by 48.
00:52:12This is your X, my brother.
00:52:14Your Y is 3.
00:52:161 plus 3 is 4.
00:52:184 multiplied by 48.
00:52:20This is our total work.
00:52:22But we don't have to do the total work.
00:52:24How much work do we have to do here?
00:52:261 by 12.
00:52:28We will do the total work 1 by 12.
00:52:30How will we do the work?
00:52:32You will say X.
00:52:34How will you divide?
00:52:36You will divide by X.
00:52:38When you subtract it,
00:52:40you will get 4 times 12.
00:52:42In 16 days,
00:52:44you will get option B for Bahubali.
00:52:46Now, you solve these questions
00:52:48slowly.
00:52:50As your speed increases,
00:52:52as you make questions,
00:52:54your speed will increase.
00:52:56So, take care of this.
00:52:58Okay? Let's go.
00:53:00Mr. Rajendra, when we teach,
00:53:02you have to be very careful.
00:53:04If you are not careful,
00:53:06accidents will happen.
00:53:08Let's go.
00:53:10This is a very beautiful question.
00:53:12It is said that
00:53:14A and B can finish a work in 6 days.
00:53:16If A work at double his normal speed
00:53:18and B work at one third of his normal speed,
00:53:20they can complete the work in 6 days.
00:53:22Remember this question.
00:53:24If you don't remember,
00:53:26I will remind you.
00:53:28What is this question?
00:53:30You will remember this question
00:53:32immediately.
00:53:34Look at this question 71.
00:53:36He is the brother of 71.
00:53:38He is the elder brother who got separated in Kumbh Mela.
00:53:40Here also, it was said
00:53:42that A and B can finish a work in 12 days.
00:53:44So, A and B can finish a work in 12 days.
00:53:46Then it was said
00:53:48that A is not in a mood to work.
00:53:50So, A work at half as efficiently
00:53:52as he usually does
00:53:54and B work at thrice as efficiently
00:53:56as he usually does.
00:53:58A works half of his ability
00:54:00and B works triple of his ability.
00:54:02So, our work gets completed in 9 days.
00:54:04Then, we related from here
00:54:06and calculated the total value.
00:54:08We put this in the equation
00:54:10and calculated the total work.
00:54:12Even today, you have the same
00:54:14day, the same time,
00:54:16the same moment.
00:54:18You have to do the same thing.
00:54:20This is the question of CRPF at constable.
00:54:22You have to do the same thing.
00:54:24A and B can finish a work in 6 days.
00:54:26You will say here
00:54:28whenever it comes to finishing,
00:54:30it means total work.
00:54:32Because they are not doing half of the work.
00:54:34Because they are not doing half of the work.
00:54:36So, total work.
00:54:38A and B can finish a work in 6 days.
00:54:40Then it was said
00:54:42if A work double his normal speed
00:54:44and B work at one third of his normal speed.
00:54:46If we talk about
00:54:48if A works
00:54:50double of his normal speed
00:54:52and B works
00:54:54half of his normal speed.
00:54:56So, B work as one third of his normal speed.
00:54:58One third of his normal speed.
00:55:00So, that work
00:55:02is completed in 6 days.
00:55:042 into 4 is 8 and 1 is 9 divided by 2.
00:55:06So, in 6 days,
00:55:08our work is completed.
00:55:10So, in this question,
00:55:12the relation is first.
00:55:14If we talk about the relation,
00:55:16we will divide by 3 twice.
00:55:18And we will divide by 3 thrice.
00:55:20If we see,
00:55:222 will be multiplied by 2.
00:55:242 into 2 is 4.
00:55:264 into 1 will be 4.
00:55:28And here 4 will also be there.
00:55:30After that,
00:55:32if we multiply 3 by 2,
00:55:346 will be A and 3 will be B.
00:55:36It will not be 3 at all.
00:55:38These are the small mistakes
00:55:40that you don't keep in mind.
00:55:42If you multiply 3 by 2,
00:55:446 will be there and it is 1 by 3.
00:55:46So, if I multiply 1 by 3 B
00:55:48with 3,
00:55:50it will be 1B.
00:55:52So, why should we make this mistake?
00:55:54If you divide 3 by 3,
00:55:56you will get 1B.
00:55:58After that,
00:56:00if you subtract 1 from 4B,
00:56:02you will get 3B.
00:56:04And if you subtract 4 from 6,
00:56:06you will get 2A.
00:56:08If we see further,
00:56:10the value of A in B
00:56:12is 2 by 3.
00:56:14This is the equation
00:56:16of our ability.
00:56:18This is the equation of our efficiency.
00:56:20This is the equation of our ability.
00:56:22Now, with this ability,
00:56:24I can do whatever I want.
00:56:26I can do whatever I want.
00:56:28This is the biggest thing.
00:56:30So, when you see in the question
00:56:32about the task,
00:56:34it is said that how many days
00:56:36will it take for B to complete the work
00:56:38at his normal speed working alone?
00:56:40So, let's assume that B will take 3 days.
00:56:42And to do which task?
00:56:44Either take this or this.
00:56:46This looks a little cheap and easy.
00:56:48So, let's take this.
00:56:50And how many days do we take?
00:56:52Let's take 6 days.
00:56:54If we subtract 2 from 6,
00:56:56then it will be 2T.
00:56:58And if we subtract 5 from 6,
00:57:00then it will be 6.
00:57:02If we subtract 2 from 6,
00:57:04then it will be 15.
00:57:06So, which option will be A?
00:57:08Come to the mansion.
00:57:10Believe me,
00:57:12you never know the time
00:57:14that how and when time passes.
00:57:16We get lost in the depth of the question.
00:57:18And my only purpose is
00:57:20that when I come here to teach
00:57:22or when I come here to teach something,
00:57:24then you guys use your brains.
00:57:26Just don't look at
00:57:28what is being taught by the teacher
00:57:30and what is being printed by the student.
00:57:32I want to do the opposite.
00:57:34I want that when I give a question,
00:57:36your brain should work before me.
00:57:38You should try and solve it.
00:57:40Then what will happen is
00:57:42that if I get a question from outside
00:57:44or a question from the previous year,
00:57:46or if you go to give a test,
00:57:48then your own mind should work there.
00:57:50As it is always said,
00:57:52Ratantu buddhi ghadantu vidya.
00:57:54It means that the one who tries,
00:57:56his knowledge decreases.
00:57:58So, knowledge is not to be reduced,
00:58:00knowledge is to be increased.
00:58:02And how will it come?
00:58:04It will come through continuous practice.
00:58:06It is said,
00:58:08Karat karat abhyas ke,
00:58:10jadmati hot sujat,
00:58:12rasri avajjat ke,
00:58:14silpat parat nisaan.
00:58:16Keep practicing,
00:58:18whatever it is,
00:58:20we will listen to you.
00:58:22My favorite teacher,
00:58:24you are also my favorite student.
00:58:28In question 76,
00:58:30it is important to listen to your panchayat.
00:58:32If you don't listen,
00:58:34how will you work?
00:58:36Easy.
00:58:38Who is called love?
00:58:40In question 78,
00:58:42why didn't you take God's efficiency?
00:58:44Rajendra ji's question is
00:58:46In question 78,
00:58:48why didn't you take God's efficiency?
00:58:50Which efficiency are you talking about?
00:58:52Which efficiency are you talking about?
00:58:54Which efficiency are you talking about?
00:58:56Okay, I understood.
00:58:58You are saying that
00:59:00this efficiency was 5,
00:59:02this efficiency was 4,
00:59:04this efficiency was 4,
00:59:06and this efficiency was 3.
00:59:08So, why did you make them different?
00:59:10Why did you take God's efficiency?
00:59:12So, see,
00:59:14Rajendra ji,
00:59:16understand this.
00:59:18The efficiency ratios
00:59:20are not 5 or 4,
00:59:22the efficiency ratios
00:59:24are 4 and 5.
00:59:26They came when I compared
00:59:28A with B.
00:59:30Similarly, the ratio of C and D
00:59:32is 4 and 3.
00:59:34It came when I compared C with D.
00:59:36But when I compare between 4,
00:59:38the efficiency changes
00:59:40according to the LCM I take.
00:59:42If a child is taking 240,
00:59:44then 8, 10, 20,
00:59:46and 15 will come here.
00:59:48But if someone takes 360 there,
00:59:50someone takes 480,
00:59:52then all the factors of LCM
00:59:54will change here.
00:59:56And what comes here is called efficiency.
00:59:58So, in that case,
01:00:00we will not consider them.
01:00:02The number of LCMs you are taking
01:00:04and the number that comes here
01:00:06by dividing the LCM,
01:00:08that becomes your new efficiency.
01:00:10A child can take 100,
01:00:12a child can take 240,
01:00:14a child can take 360.
01:00:16But if you consider this as a fixed efficiency,
01:00:18then every time your answers will be different
01:00:20and they will be wrong.
01:00:22Therefore, keep this in mind.
01:00:24The efficiency that is basically depending
01:00:26is based on the work here.
01:00:28Whatever work you consider,
01:00:30it will be based on efficiency and you have to take it.
01:00:32Okay.
01:00:34What are the other doubts?
01:00:36Tell me.
01:00:38How long will the course last?
01:00:40The duration of the course is 8 to 9 months.
01:00:42I am never in a hurry to finish the course.
01:00:44Because I feel that
01:00:46I should teach once
01:00:48but teach the children well.
01:00:50So that they understand.
01:00:52Many times it happens that you complete the course from one place.
01:00:54The syllabus has been completed from there,
01:00:56but the topics are not completed.
01:00:58In this case, you make more mistakes.
01:01:00So my attempt is to walk a little slowly.
01:01:02Have you seen how fast I teach on YouTube?
01:01:04I get 30 questions in an hour.
01:01:06But when I teach here,
01:01:08I get 10 questions in an hour.
01:01:10I am the one who is getting 30 questions on YouTube for 1.5 hours.
01:01:12And he is the one who is explaining
01:01:14everything here.
01:01:16Because we know that your foundation
01:01:18is to be built from here.
01:01:20You can practice from YouTube,
01:01:22but when it comes to understanding the whole math,
01:01:24the application is correct.
01:01:26Okay.
01:01:28Let's end today's session here.
01:01:30We will meet again in tomorrow's class.
01:01:32We will be live in the remaining 6.30 hours.
01:01:36Take care. Be happy. Study well.
01:01:40Be happy.