Category
🐳
AnimalsTranscript
00:00you
00:30You
00:38Jai Hind, welcome to your family. How are you all?
00:47How are the kids?
00:50Good evening, good evening. Jai Hind to everyone.
00:54Welcome to everyone.
00:57Welcome to your family.
00:59I hope you all are fine, happy, happy and healthy.
01:02I hope your kids are happy and well.
01:14Very good.
01:16Very good.
01:18You all are fine.
01:20Good.
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02:00You
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02:16You
02:18Vikramjeet sir is having some issues right now. Please cooperate with him.
02:24His mother is not keeping well right now.
02:28He is in different hospitals right now.
02:32So if he is not able to attend classes, please do not use negative words for him.
02:39Please do not say anything that hurts his feelings.
02:42He is in a very serious condition right now.
02:45Please cooperate with him.
02:47Let's see what the question says.
02:50The question says...
02:53Sorry.
02:55A does the same thing in 18 days.
02:59B does the same thing in 72 days.
03:02C is so much more capable than B.
03:05They do the same thing together.
03:07A leaves work 8 days earlier.
03:09B leaves work 17 days earlier.
03:11C leaves work 17 days earlier.
03:13B continues the work until the work is done.
03:17It is not mentioned how many days total work is done.
03:20It is mentioned how many days did A work.
03:24So whoever leaves work earlier...
03:27So what we do here is...
03:30We minus the work done by the person after him.
03:33And we add the work done by the person before him.
03:36The second thing is...
03:38I have told you a trick.
03:40What you can do with that trick is...
03:43You can calculate the total number of days.
03:46And when you get the total number of days...
03:49You can keep on minusing the number of days.
03:52You will get the total number of days.
03:55Now let's see how to solve this problem.
03:58Let's see what the question says.
04:01The question says...
04:03A does the same thing in 18 days.
04:05B does the same thing in 72 days.
04:07So A does the same thing in 18 days.
04:10And B does the same thing in 72 days.
04:13C is a little helpless.
04:16And C is said to be more efficient than B.
04:21C is more efficient than B.
04:23So let's write C like this.
04:27And we will take the LCM based on these two people.
04:32If we take the LCM of 18 and 72, it will be 72.
04:35Look at the board carefully.
04:37Otherwise, you will get into an accident.
04:39If you divide 72 by 18, you will get 72.
04:43If you divide 72 by 72, you will get this much.
04:48And what is said in the question?
04:50You can remove C.
04:52My brother, here it is said that...
04:54You have calculated the total number of days based on 18 and 72.
04:57I will repeat it again.
04:59A is this much day and B is this much day.
05:01So here in the question it is said that...
05:03On the basis of both, our total work is 72.
05:06Its capacity is 4 and its capacity is 1.
05:09Now in the question it is said that...
05:14What does this mean?
05:16So the first thing, if I break this percentage here.
05:22And when I break it, I will say that it is 1 by 3.
05:26That is, suppose B has a value of 3.
05:28So how much is 1 more in it?
05:30So 4.
05:32If the value of B is 3, then you can say it in many ways in the question.
05:37Or you can say that C is more than B.
05:42So if the value of B is 3, then it is 1 more in it.
05:46Or B is 4 by 3.
05:48You can use such words here.
05:51If you do not want to write like this, then you can use another method.
05:56Whenever it is said that suppose B is more than C.
06:00And how much is more? So much percent.
06:02This percentage means 1 by 3.
06:05So it means here that if we look here.
06:08Whenever you will get a question like this after today.
06:12Sir, who is more than B? So C.
06:14Who is more than B? So C.
06:16And how much percent? So much.
06:17This means that we have to take the value of B as 3.
06:20And if we add 1 to 3, then how much will be the value of C?
06:22It will be 4.
06:23Here, understand this.
06:25If it is 3, then it is 4.
06:26Suppose 1 by 9 is more.
06:291 by 9 is more.
06:30And who is more? C is more.
06:31And who is more than B?
06:33So what does it mean here?
06:35It means that if we take the value of B as 9.
06:37So how much will be the value of B in 9? It will be 10.
06:39In 9, 1 more will be 10.
06:42So in the same way, if we look here in this question.
06:45So in the question, we were told that the value of B is so much more.
06:50Now if the value of B is more, then what will we do here?
06:53So what we wrote for the other two people.
06:55We wrote 18 for one.
06:57And we wrote 72 for the other one.
06:59We leave them alone.
07:01There is nothing to worry about.
07:03We will leave them alone.
07:05The second line that we were told here.
07:07It was said that C is so much more than B.
07:11So here we declare C.
07:13Here we declare B.
07:15And we say C is more.
07:17How much? 1 by 3.
07:191 by 3 means that if the value of B is 3.
07:21Then how much is 1 more than 3? It is 4.
07:23If we look here, what is the efficiency of B?
07:25If we look here, what is the efficiency of B? It is 3.
07:27And if we look here, what is the efficiency of B? It is 1.
07:29So we will make the efficiency of B equal.
07:31And to make it equal, what will we do here?
07:35So here also 3 times.
07:37And if you do it here, then here also 3 times.
07:39And according to that, what will be your total work?
07:41Total work will also be 3 times here.
07:45Basically, if we talk, then it will be this much.
07:47Now, as I told you that if any person leaves after me or before me, then minus.
07:53And if he leaves before me, then plus.
07:55What is said here in this question?
07:57Please read it.
07:59So you will say that here A left 8 days and C left so many days before the completion of work.
08:05And B continued the work.
08:07So in such cases, we always take out the total days here.
08:11And whenever we talk about total days,
08:13then we say here that
08:15our work for total days is
08:173 into 2 is 6 and here 7 into 2.
08:19This is our work.
08:21In this, whoever has left the person,
08:23call that person and get the work done.
08:25So this is your total work.
08:27A left 8 days before.
08:29A left 8 days and C left so many days before.
08:33So the work of 8 days should be done here by A.
08:35And after that, the work of 17 days should be done by C.
08:39Because here you have not minus anyone.
08:43So if you have not minus anyone, then the divide will be
08:45A, B and C all together.
08:49Now this is our 216.
08:51A is 8.
08:53So here is 12.
08:558 times 12 is 96.
08:57And C is 17 times.
08:59So C is 4.
09:01And 4 times 17 is 68.
09:03Divided by 3 is the sum.
09:05So A's value is 12.
09:07B's value is 3.
09:09And C's value is 4.
09:11Now if you give 4,
09:13then it will become 164.
09:15And this is our total
09:17total is 380.
09:19If we see above,
09:21then it is 380.
09:23And if we see below,
09:25then it is 4, 3, 7 and 19.
09:27If you divide by this,
09:29then the total days will be 20.
09:31So the total work is done in 20 days.
09:35And it was said that
09:37A left 8 days before.
09:39So how many days did A do the work?
09:41So if I have to find the time of A,
09:43then I will say
09:45The total work was done in 20 days.
09:47He left 8 days before.
09:49So how many days did he work?
09:51He worked for 12 days.
09:53If I have to find the value of C,
09:55then C left 17 days before.
09:57So if C left 17 days before,
09:59then subtract 17 days from 20 days.
10:01That means C did only this much work.
10:03And if I have to find the value of B,
10:05then B is working from the beginning
10:07to the end.
10:09That means B worked for 20 days.
10:11So the questions that come in the paper,
10:13in such cases,
10:15take out the total number of days.
10:17And after the total number of days,
10:19you can subtract the data of different people
10:21and you can tell
10:23who worked for how many days.
10:25Today it may be that
10:27A came in your paper,
10:29tomorrow it may be C and B.
10:31So what will you do here,
10:33so keep in mind.
10:35For now, A was discussed in the question,
10:37so option number D will be the correct answer.
10:39So I repeat again,
10:41I repeat again
10:43I repeat again
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11:27I repeat again
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11:33I repeat again
11:35I repeat again
11:37How was 1 by 3,
11:39Akash Kumar? If you do not even know
11:41that this percent
11:43is equal to 1 by 3,
11:45then I do not think you should
11:47see this class. You should go back
11:49and revise from class number 1.
11:51Because it is a very basic thing
11:53that the fraction value of this percent
11:55is 1 by 3.
11:57The fraction value of this percent was 1 by 3.
11:59There are three people in your house,
12:01so how much will be the share of each one?
12:03This much percent and the same percent
12:05is equal to 1 by 3.
12:07It is a very basic thing.
12:09If we talk about the next question,
12:11then the next question is
12:1382 number question.
12:15It is said that when they work alone,
12:17then compared to A,
12:19B needs 25% more time
12:21to finish the work.
12:23They complete both in 13 days
12:25in the same way.
12:27A works alone until
12:29half the work is completed.
12:31After that, A and B work together
12:33for the remaining work.
12:35Even in the last, A and B completes
12:37the remaining 5% work.
12:39Keep this question on hold.
12:41We will not do it at the end.
12:43You will have a mental breakdown.
12:45There will be no benefit.
12:47We will keep this question on hold.
12:49Okay.
12:51We are going to teach you a special concept
12:53of time and work.
12:55The name of this concept is
12:57When A and B takes x and y,
12:59it is more than A plus B.
13:01There are two people.
13:03Focus on the board.
13:05I am teaching you a very special concept.
13:07It is a very special and beautiful concept.
13:09You can get the answer in one line.
13:11There will be such questions
13:13after studying and teaching.
13:15What is the special concept here?
13:17Suppose,
13:19any person named A
13:21or two couples
13:23couple means A and B.
13:25Suppose,
13:27in your question,
13:29A and B do some work together
13:31in three days.
13:33If A goes to do the work alone,
13:35he can do the work alone.
13:37But it will take me four days more
13:39than the work done by A and B.
13:41If B goes to do the work alone,
13:43he can do the work alone.
13:45But the work we do together
13:47will take me nine days more
13:49because I am doing it alone.
13:51If I had done it together,
13:53it would have taken so many days
13:55because we are doing it alone.
13:57In this case,
13:59there are three types of questions.
14:01The first question is
14:03how long did A and B finish the work together?
14:05The second question is
14:07how long did A finish the work?
14:09The third question is
14:11how long did B finish the work?
14:13You are asked the time of all three.
14:15If we make it from the basics,
14:17what do we have to do here?
14:19We have to take their LCM
14:21and solve it.
14:23We have to talk about the world.
14:25In this question,
14:27you have a smart approach.
14:29What we are telling you
14:31and what I have mentioned
14:33in the formula book,
14:35what does it do here?
14:37The smart approach teaches us
14:39that in such questions,
14:41or in such ways,
14:43what we have to do here is
14:45that you have to find the value of T.
14:47Do you know what is the value of T?
14:49It is more than T
14:51and more than T.
14:53The more the value of T,
14:55multiply it.
14:57Multiply 4 and 9 and find the root.
14:59If you have to find the value of T,
15:01to find the value of T,
15:03multiply this by this
15:05and find the root.
15:07The root of 36
15:09is 6.
15:11The value of T is 6.
15:13If the value of T is 6,
15:15how many questions
15:17are we going to have?
15:19There are three types of questions.
15:21The first question is
15:23if we have to find the time of A plus B,
15:25the second question is
15:27if we have to find the time of A,
15:29and the third question is
15:31if we have to find the time of B.
15:33If we talk about A plus B,
15:35it will be 6 days.
15:37If we multiply 6 by 4,
15:39it will be 10 days.
15:41If we multiply 6 by 9,
15:43it will be 15 days.
15:45In this way,
15:47we will tell the number of days.
15:49If we ask the question,
15:51how many days does A take to complete a task?
15:53If A takes more days than A plus B,
15:55and B takes more days than A plus B,
15:57how do we find the time?
15:59The more time we take,
16:01the more time we multiply by the root.
16:03That is why I have written a formula
16:05in your formula book.
16:07If that case is solved,
16:09which case?
16:11The case where
16:13A plus B completes a task in T days
16:15and A alone completes a task in T plus A days.
16:17and A alone completes a task in T plus A days.
16:19and B alone completes a task in T plus B days.
16:21and B alone completes a task in T plus B days.
16:23Remember to use root under A and B
16:25to find the value of T.
16:27That's it.
16:29This is our special concept.
16:31You also have to keep this in mind.
16:33Let's move on.
16:35If we talk about questions,
16:37let's see the questions.
16:39I am putting a question in front of you.
16:41A alone would take 27 hours
16:43more to work a complete than
16:45A plus B together.
16:47B alone would take 3 hours more to complete the work
16:49than A plus B together.
16:51How many days A alone can complete the work?
16:53Let's assume that A and B are doing
16:55a task in T days.
16:57How many days are they doing in T days?
16:59If A does a task alone,
17:01he will say that A is taking more than 27 hours.
17:03If he is taking more than 27 hours,
17:05then he will be more than 27 hours.
17:07Then, B is taking more than 3 hours.
17:09If B is taking more than 3 hours,
17:11then he will be more than 27 hours.
17:13How many days can A and B work together?
17:15If A and B work together,
17:17then how much time will A and B take?
17:19If A and B work together,
17:21let's assume that
17:23time will be equal to
17:25A plus B plus
17:27B plus A.
17:29If they do 88 times,
17:31then how much time will A and B take?
17:33They will take 9 hours.
17:35How much time will A take?
17:37The answer is
17:3927 hours.
17:41If you add 27 to 9, then it will be 36, which option will be option A, come to the mansion
17:51It is clear here, so the root of 36 will be 81, which is 9
17:57Come, we will give you one more question, and you answer this question, what is said about 84 number question, please read
18:04The question in front of you is that if A and B work together, then D can be completed in days
18:09How many days does it take for A to work alone, and how many days does it take for B to work alone
18:14Then it was said here, if A works for 4 days, then tell me how many days will be completed by C and B
18:21This is our whole question, what did we say here?
18:25We said here that A and B working together can complete a piece of work in how many days, so D days
18:31After that, what A feels is 8 plus D, and what B feels is this much
18:36I just want to get the value of D here, so I said here that listen, if you want to get the value of D
18:43Then multiply the number of times it is more, 8 is more and the other guy is more than 18
18:49So 8 into 18 is 144, if we root 144, then 12 will come, how much will come, then 12
18:57I repeat again, how much will come, then 12 will come
19:02That is, if A and B work together, then how many days, 12 days
19:07Now after that, if I want, then I can take out the time of A and B in the question
19:12So if you talk about A, then if you add 8 to 12 in A, then how much will it be, then you will say that the value of A will be 20
19:19And if you talk about B, then look at 12 in B, how much will be 12 and 18, it will be 30
19:25If we take their LCM, then our total work will be 60, 20 here is 3 times, 30 here is 2 times
19:31Now what is said here in the question, so it is said that my brother, A work for 4 days
19:37So it is said that the remaining work was completed by B alone in
19:41Okay, so let's assume that it is said that working alone here, how many days did A work, so A worked here for 4 days
19:51And it was said, brother, how many days will B do the remaining work here, so in T days
19:56And by going to whom will the total work be equal to, it will be equal to 60
20:01What is the value of A, 3 into 4 will be 12, and the value of B will be 2T, it is equal to 60
20:08If we see, then we will say that the value of 2T is 12 out of 60, so it will be 48
20:14How much will be the value of T here, so 24, that is, it is said here in the question, how many days will B complete the remaining work, so in 24 days
20:22You have the solution to everything, you have the answer to everything, there are small things that you have to understand in a better way
20:31Like I just taught you a concept that who is taking how many days from whom, what do you have to do to subtract the number of days
20:38The more the number, the more the root
20:43Now in this question, we will show you one more type moving forward
20:48And the type that we will show you, then this will happen here
20:52Babulal, Babulal, my brother, there are also questions of CDS in the batch
20:58If you see the number system and see all this, you will get it, in advanced math, the questions of CDS are asked more
21:04That is why we also keep their questions in advanced math
21:07And on the first day, we also forget that what we are getting you batched is also for all exams
21:12And the questions we will also do, they will ask questions of almost all exams
21:16For this, you do not need to tell me, nor do you need to write in the comment
21:20We take care of these things from the beginning, okay
21:23Come on, when we are teaching, we know that which exam should be asked and which should not be asked
21:28So you pay attention to your studies quietly, leave the rest on me
21:32Let's go
21:33Now if we talk about the next question, what is said here
21:36See, the question my brother is here, it is told here in a slightly different way
21:42And what is it here, see
21:44It is said that A can complete a work in 5 more days than B, while A does the same work in 9 more days than C
21:54If A and B can complete the whole work in which C alone can do the work in how many days A could complete the same work
22:00Now there are not two people here, now there are three people here
22:03Which three people are there, brother
22:05One is our A, the second is our B and the third is our C
22:09Okay, so in the question it is said that doing the same work takes more than 5 days from B
22:14So how many days does it take from B, it takes more than 5 days
22:18And then after that it is said here while, okay
22:21And then while A does the same work in 9 more days than C
22:25If we talk about A, how much will it be for us, then my brother will be more than 9 days
22:29So doing the same work takes more than 5 days from B and more than 9 days from C
22:35This is done by us, there is no problem
22:38The most important thing here is this
22:41And the child who understood this, then this will be a great thing
22:45If A and B can complete the whole work in the same time in which C alone does the work
22:51I said that to show the teeth of an elephant, to eat something else
22:54So this thing is found now
22:56The more time A and B work, the more time C also works
23:02So then what is the need of a person named C
23:05That is, somewhere you are trying to say here
23:08Stand C on one side and stand A and B on the other
23:12So the more time he will take, the more time he will take
23:15Means this group and this group are not different
23:18The examiner is just confusing you by giving you a person named C
23:22Make a separate identity here
23:25Even though it is not C, it is A plus B
23:29Assume this
23:30Sir, how much is this?
23:31This is A plus B
23:34Understood
23:35So you can complete a piece of work in 5 more days than B
23:38And after that, while A does the same work in 9 more days, C will be done
23:43Now see what happens here
23:46So we said that it is fine
23:48Assume that he has done this work in T days
23:52This person takes more than 9 days from this
23:54That is, how much will he take?
23:55So T plus 9 will take
23:57After that, I have taught you one thing very well
24:01And what is it here
24:02That this is A and B
24:03Assume that this is more than 3 days from this
24:06How many days is more than this?
24:073
24:08So like if this is T
24:09Assume its value here
24:11Suppose
24:12How much is it?
24:134
24:14So if 3 is more than 4, how much will it be?
24:157
24:16So if 3 is more than this, then the opposite story will happen here
24:20What will happen here?
24:213 will be less
24:22So if 3 is more than 4, how much will it be?
24:257
24:26So if 3 is less than 7, how much will it be?
24:284
24:29If there is a plus above, then there is a minus below
24:31Minus above, plus below
24:33Multiply above, divide below
24:35Similarly, if 5 is more than this, then its reverse will happen here
24:40And what will happen?
24:415 will be less than this
24:429 minus 4
24:44How much will it be?
24:45This much
24:46If this much, then this will be this much
24:48And I don't think anyone is having any problem here
24:51We have told all the basic things
24:53You can also see that sir, add 5 days to this
24:56So this comes out
24:58Now what did I explain to you now?
25:00I explained to you that if A plus B is done in T days
25:07And this is more than 4 days from this
25:09And this is more than 9 days from this
25:11So to get the T command
25:13How much ever is more
25:14Like if 9 is more, then we will write 9
25:16And if 4 is more, then we will write 4
25:19This is 36
25:20And how much do we get by rooting 36?
25:226
25:25How much do we get?
25:26Friends, we get 6
25:27Now the question was
25:28In how many days A alone can complete the same work?
25:31How many days will A finish that work?
25:33So here if we talk about A
25:35Then we will say
25:36Sir, see this
25:37If you want to know about A
25:40For A, you have to add 9 to 6
25:42Then we will get 15
25:44Which option will be there?
25:45Then option number B will be there
25:47It will be the correct answer
25:49So you have to pay attention to this
25:52That the person named C
25:54Is given for no reason
25:55Instead of that, we can write A or B
25:57If this is our T
25:58Then this will be more than 9 days from this
26:00If we add 5 to this
26:02Then this will come after subtracting 5
26:04If we multiply the value of T and root it
26:06Then it will come out
26:07After that we will write A or B's value
26:10Will subtract
26:11Okay
26:12Come, one more question is in front of you
26:14And here you see this question
26:16It is just a photocopy of the previous one
26:18Read it
26:19It was said
26:20In doing this work
26:21B takes 6 days
26:22And C takes more than this
26:23If A and B work together
26:25Then the time taken by them
26:27Is equal to the time taken by C
26:30So how many days will B alone take to do that work?
26:33I give you a minute for this question
26:36And I think you should make it in 30 seconds
26:39But still I have given you a minute
26:41Come on, make it and show me
26:43Let's see how many people make this question
26:46Come on, make it
26:47All of you make it quickly
26:48How many days will my brother take to make it?
26:50Tell me
26:51Give the answer
27:08Make it, try it
27:26Done
27:33Come on
27:34Tried
27:35Till the time you are trying
27:37Vibha ji's comment is coming
27:39Sir, the answer will be something else in question no. 76
27:41What will be the answer in 76?
27:43Okay
27:45In 72
27:47In 76, Vibha ji says that it will be 72
27:51It will not be at all
27:53Okay
27:54It will not be at all here
27:56When you see the answer of 18 and 45
27:58Okay
27:59Our answer is exactly 45
28:01It will not be 72
28:02It will be 45, Vibha ji
28:03You check it once
28:05Come on
28:06We are going to the next question
28:07And we are seeing this question
28:09What has been said?
28:10So here again we have three people
28:12We have A
28:13And we have B
28:15And we have C
28:17It takes 6 days from B to do the same thing
28:20So if we talk about doing the same thing
28:22How many days does it take from B?
28:24So 6 days
28:25And after that it takes more than 2 days from C
28:28This person, how many days is my brother taking?
28:30So he is taking more than 2 days
28:32More than 6 days from this
28:33More than 2 days from this
28:34He has taken more than 2 days to do this
28:36Now after that what has been said here?
28:38See
28:39Next question
28:40As I said
28:41If time taken by
28:42Focus on this
28:43A and B together to do the work is equal to time taken by C
28:46A and B work in the same time as C
28:50So what is the need of C here?
28:52Tell me this
28:53There is no need of C
28:54When C is equal to A plus B
28:57So why did we call a person named C here?
28:59So we kept it A plus B, my brother
29:01Now what has been said in the question?
29:03In the question it has been said
29:05A does the work in 6 days less
29:07So here it has been said that
29:09A works in 6 days less than my brother
29:11And B does the work in 2 days more than C
29:156 days less than this
29:172 days more than this
29:19So if we take it as T
29:21If we add 2 to T
29:23Then it will become T plus 2
29:25After that I had said
29:27If there is a minus above
29:29Then there will be plus below
29:30To go from here to here
29:32There is a plus support
29:33So how much will be here?
29:34If there is a minus above
29:35Then there will be plus below
29:36If we add 6 to 2
29:38Then it will be T plus 8
29:40Did you understand?
29:42Now what will happen here?
29:43As long as A has done
29:45The same time C has done
29:47So this is more than this
29:48This is more than this
29:49So whatever they are more
29:51Multiply it and put the root
29:53Your root will be 16
29:554
29:56Now in the question it has been said
29:58In how many days B alone can complete the work?
30:00If we talk about the value of B
30:02If you add 8 to 4
30:04Then how much will you get?
30:0512
30:06And which option will be there?
30:07C for love
30:09How much will be here?
30:10C for love
30:12Ok, let's go
30:13Now here you start
30:15Your favorite concept
30:17Whose name is MDH concept
30:19Ok
30:20Although MDH concept
30:21I have asked you a lot of questions
30:23Ok
30:24But now from zero level
30:26From start
30:27From basic
30:28From scratch
30:29We will understand everything
30:30What is MDH concept?
30:32What does it say here?
30:33Understand this
30:34In Hindi, 6 less is not given
30:36To do the same thing
30:38So much less than B
30:40No problem here
30:41Write so much less
30:42If it is not given
30:44So much less is done here
30:46And so much more than C
30:48Correct it in Hindi
30:50Come
30:51So we talk about MDH concept
30:52So what is MDH concept?
30:54Suppose I say
30:5610 people can do the same thing in 3 days
30:58So how many days will 3 people do it?
31:00I repeat again
31:0210 people can do the same thing in 3 days
31:04So how many days will 3 people do it?
31:06So to solve such puzzles
31:08A concept came
31:10Whose name is given here
31:12MDH concept
31:14What name was given?
31:16MDH concept name was given
31:18What are the basic things of MDH concept?
31:20Its things are
31:22M1
31:24D1
31:26H1
31:28Divided by W1
31:30This will be equal to
31:32M2
31:34D2
31:36H2
31:38Divided by W2
31:40What is M1 here?
31:42What is the trick to remember?
31:44Like MDH spices
31:46What is made from spices? Food
31:48Who makes food?
31:50So you can remember
31:52MDH
31:54And what will be divided by?
31:56W
31:58Ok
32:00Now come
32:06So if we talk about MDH concept
32:08Here
32:10What does M tell us?
32:12M is the number of men
32:14Number of women
32:16And like this
32:18Boys
32:20Child
32:22Any group
32:24Different things
32:26Different things
32:28Many times
32:30Instead of M
32:32One man
32:34Working with three women
32:36Or
32:38One man
32:40One child
32:42Working with three women
32:44This tells you about
32:46Individual person
32:48Or group of person
32:50If we talk about D
32:52D tells us about
32:54Days
32:56How many days, hours, years
32:58And how it happened
33:00H tells us
33:02How many hours it happened
33:04And W
33:06It has two meanings
33:08One W means
33:10Work in time and work
33:12And when we increase in next
33:14And when we increase in next
33:16In work and wage
33:18It means money
33:20Now
33:22If we see here
33:24What will we say?
33:26With this we will start the questions
33:28And understand small things
33:30Like in this question
33:32Group of 25 tourists can consume
33:345 containers of food in this many days
33:36In a hotel
33:38How many containers will be required for 10 tourists
33:40To eat 16 days
33:42So whenever it happens
33:44Some people did some work in some days
33:46Ate some food
33:48Painted some house
33:50Printed some books
33:52So whatever they are doing
33:54It becomes their work
33:56So the concept we remember here
33:58One group's work is given
34:00And about other group's work
34:02My brother always
34:04MDH upon W1
34:06So you will say
34:08MDH upon
34:10Ok
34:12So if we talk here
34:14So we have so many tourists
34:16So it becomes M
34:18We have so many containers
34:20So it becomes W
34:22We have so many containers
34:24So it becomes W
34:26We have so many days
34:28So it becomes D
34:30So we have W
34:32In other case
34:34How many containers will be required for 10 tourists
34:36So it becomes M2
34:38So it becomes D2
34:40So it is not necessary
34:42That you are given hours
34:44It is not necessary
34:46It is necessary
34:48It is possible
34:50So we will keep it on this
34:52So we will say
34:54How many tourists are there in the first case
34:56So 25 tourists
34:58How many days will work
35:00So 8 days
35:02And how much will work
35:04So 5 containers
35:06How many days will work
35:08So 16 days
35:10And how much will work
35:12So X
35:14Now if we see here
35:16So we will say
35:185 times
35:208 times
35:222 times
35:245 times
35:262 times
35:282 times
35:304 times
35:324 times
35:34If you have any problem
35:36If you have any problem
35:38So tell me
35:40So what will happen
35:42So it will be 4
35:44Next question
35:46On this concept
35:4836 persons can do a work in 10 days
35:50Working 6 hours a day
35:52See here
35:54This is the number of people
35:56People's number is M1
35:58The number of working days is D1
36:00The number of working hours is H1
36:02Now
36:04How many days will work
36:06So this will be M2
36:08How many hours will work
36:10So H2
36:12And how many days will work
36:14So D2
36:16In simple language
36:1836 people
36:20M1 D1 H1
36:22Divided by W1
36:24M2 D2 H2
36:26Divided by
36:28W2
36:30Divided by
36:32W2
36:34If we talk here
36:3636 people 10 days
36:386 hours
36:4036 people 10 days 6 hours
36:4236 people 10 days
36:446 hours
36:46Now here
36:4824 people
36:50X days
36:529 hours
36:54W1 W2 is same
36:56Both are same
36:58We will not write W1 W2
37:00No need
37:02If you cut here
37:04You will cut from 9 to 4
37:06From 6
37:08You will cut from 4 to 24
37:10X days
37:12That's it
37:14So this is MDH
37:16This is MDH concept
37:18Which tells you
37:20How many people
37:22Can do a work in 10 days
37:24Ok
37:26Let's talk about
37:28Next question
37:30What is said
37:32In question
37:34Hostel has a food provision of
37:36300 students for a month
37:38300 students have
37:401 month food
37:42After 20 days
37:4450 students left the hostel
37:46How long would the remaining food
37:48Last
37:50After so many days
37:52So many students leave
37:54How long would the remaining food
37:56Last
37:58I have already told you
38:00Such questions
38:02In many ways
38:04A and B can do a work
38:06For 20 days
38:08They worked for 12 days
38:10Now someone else wants to do the remaining work
38:12It means
38:14Out of 20 days work
38:1612 days are done
38:188 days work is left
38:20Hostel owner
38:22What is the responsibility of the owner
38:241 month means
38:2630 days food is available
38:28In 30 days
38:30300 students food is available
38:32After 20 days
38:34So many students leave
38:36Ok
38:38What will I say here
38:40First thing
38:421 month food is available
38:44Like Dharamshala
38:46Dharamshala has 30 days funding
38:4820 days food is done
38:50Dharamshala has 30 days food
38:5220 days food is done
38:54How many days food is left
38:56I just want to say
38:58The remaining food
39:00Remaining food
39:02The remaining food
39:04The remaining food
39:06The remaining people
39:08The remaining food
39:10The remaining people
39:12The remaining food
39:14Out of 30 days
39:1620 days food is done
39:18How many people
39:20300 people
39:22300 people
39:24Food is available
39:26Out of 30 days
39:2820 days food is done
39:30Only 10 days food is available
39:32300 people went to Dharamshala
39:34Out of that 30 days is done
39:3620 days is done
39:38Only 10 days food is available
39:40Only 10 days food is available
39:42300 people
39:4410 days
39:46So here it is said that after so many days, 50 students left Satravasa.
39:53So now what happens here is that as soon as 20 days passed, 50 people left and went.
39:57Now how many people are left?
39:59So you will say sir 250.
40:00Now how many people are left?
40:02250.
40:03Out of this, my brother left 50 people here and went.
40:05So 250.
40:06So the remaining people will finish the remaining food in T days.
40:09Here the same question is asked, my brother, that the food of 30 people or the food of
40:16300 people is left for 10 days, how many days will 250 people eat it?
40:21Often it happens here that if the food is good, then more people come and if the food
40:25is bad, then people leave and go.
40:27So like I am keeping children in Mano campus.
40:30I took admission of 300 children and I thought that let's order food for 30 days.
40:35I ordered.
40:36After 20 days, the children did not like the food and some children left, 50 children
40:40left and went.
40:41This means that their food for 10 days is available with me.
40:44If someone asks me how much food is left with you, then I will say that according to 300
40:49children, 10 days of food is left.
40:51According to 300 children, 10 days of food is left.
40:54Now because 50 children have left my hostel, so 250 children are left.
40:58So 250 children are left, so how many days will they finish that food?
41:03I just have this much request.
41:05I just have to say this much.
41:07If we cut it from 50, then in 5 times and if we cut it from 50, then in 6 times.
41:11If we cut it from 5, then in 2 times.
41:13How much will we have 6 into 2?
41:1512 and how much will this T be?
41:17So 12 and this is our correct answer.
41:19The option number C is here.
41:21What is ours, so ours is absolutely right.
41:25Okay, so you will have to understand such questions in a way, you will have to learn
41:30this.
41:31The question of food is more.
41:32Come in front of you.
41:33Now let's get another question done.
41:35And read this question of CRPF at Goldstable.
41:38In a hostel, there were provisions of 15 days for 60 boys.
41:42That is, 60 children and how many days could they eat?
41:45So they could eat for 15 days.
41:47Now it is said, if after 5 days, 15 more boys come, from how many days will the remaining
41:52food last?
41:53Some children come after 5 days.
41:55Some children leave after 5 days.
41:58This means that the food was utilized for 5 days.
42:02It was eaten.
42:03That is, to say, the campus I have, in that campus, I have arranged for 15 days of food
42:09according to 60 children.
42:11Do you know what the real story is?
42:14This is the story that 60 children have 15 days of food available.
42:18So the man writes like this that 60 children have 15 days of food available.
42:24Okay, now who eats it?
42:26It is said that if after 5 days.
42:285 days means that these 60 children ate food for 5 days.
42:32Then after that, 15 more boys come.
42:35So now 15 more come in 60, so 75 children come.
42:39And how many days do they eat that food?
42:42They eat in 3 days.
42:43So the main equation is that 60 children have 15 days of food.
42:47How is it finished?
42:49So 60 children eat for 5 days.
42:52And after that, 75 children eat the remaining food in 3 days.
42:56I am writing the remaining food in front of you.
43:00Do you know what I am writing?
43:01My brother is 15 times of 60.
43:03And when this number comes here, it becomes minus.
43:06Okay, now you keep looking at the rest of the things.
43:09So you will understand exactly what I am writing.
43:12Now there is 60 here and there is 60 here.
43:14So I take 60 as a comma.
43:16So this becomes 15 and this becomes minus 5.
43:19This is equal to 75.
43:22And finally, I write 60 here.
43:255 out of 15 is 10 and this is equal to 75.
43:28So instead of doing so much drama every time,
43:32I tell you directly,
43:35that 15 days of food is available in my hostel.
43:38And 5 of those children have eaten food.
43:41That is, now 60 children have 10 days of food.
43:4460 children have 10 days of food.
43:46And who will finish it?
43:48So 15 more children come here from that.
43:51So 75 children will finish it in T days.
43:53So when I write to you,
43:55that look, 5 out of 15 out of 60 children have eaten.
43:58So they have 10 days of food left.
44:00And 15 more children have come to eat here.
44:02So 75 children will finish it in T days.
44:05So what I am writing is from here.
44:08And you can write directly.
44:10So you don't have to do so much drama here.
44:13So you don't have to write all this.
44:16Now what will you say here?
44:18So you will say, Guruji, from 15 to 5 times.
44:21And from 15 to 4 times.
44:23And from 5 to 2 times.
44:25So here 4 into 2 will be 8.
44:27That is, how many days will the food last?
44:29So in 8 days.
44:31So how many days will the remaining food last?
44:33So our remaining food will last in 8 days.
44:35Do you understand?
44:37Is it clear here?
44:39So like in the back,
44:41where did I write 300 into 20?
44:43See, I reduced 300 by 10 times from 30 times.
44:46So it became 320 times.
44:48Do you understand?
44:50These are small things that we will make you clear.
44:52And we will not let any problem arise anywhere.
44:54Come, let's see this question.
44:56Read what is said.
44:58It is said that 18 workers can complete a piece of work in 26 days.
45:00They can complete it in so many days.
45:02But it didn't happen, right?
45:04That's it.
45:06It is said that they start working together and after that.
45:08As it is said, after that.
45:10It means the work is done that day.
45:12For example, I will call 18 people.
45:14See, what is my condition here.
45:16So I will call 18 people.
45:18I will call for so many days.
45:20I will call 18 people for so many days.
45:22And what will happen in 96 days?
45:24And after 26 days,
45:2610 more workers joined.
45:28How many, my brother?
45:30Here we will say, after 26 days,
45:3210 more people join here.
45:34So after 26 days,
45:3610 more people join.
45:38And after 26 days, 10 more workers join.
45:4010 more people join.
45:4210 more people join.
45:44Again, repeat.
45:4618 people in 96 days.
45:48After 26 days,
45:5010 more people join.
45:52So I say, the remaining work,
45:54the remaining people.
45:56It is a simple thing.
45:58So I am a contractor.
46:00I told the government to give me 18 workers.
46:02We will finish the work in so many days.
46:04I started working with this enthusiasm.
46:06And after 26 days,
46:08it means I have done the work for 26 days.
46:10So you don't have to do anything.
46:12You have to reduce the number of days.
46:14So today I have 18 workers.
46:16So today I have 18 workers.
46:18If you reduce 26 from 96,
46:20you will get 70 days.
46:22So now 70 days of work is left for 18 workers.
46:24So now 70 days of work is left for 18 workers.
46:26I asked the government for 90 days.
46:28And I worked for 20 days.
46:30It means I have 50 days of work left.
46:32It means I have 50 days of work left.
46:34I did 20 days out of 70 days.
46:36So I have 50 days of work left.
46:38I will do 40 days out of 60 days.
46:40So I have 20 days of work left.
46:42I did 26 out of 96 days.
46:44So I have 70 days of work left for 18 workers.
46:46So I have 70 days of work left for 18 workers.
46:48Now what happens?
46:50Now 10 more workers join.
46:52So add 10 more to 18.
46:54So now 28 workers join.
46:56And now they will finish the work in T days.
46:58How many days will they finish?
47:00In T days.
47:02So if you see here,
47:04you can write it like this.
47:06From 14, we will work 5 times.
47:08And from 14, we will work 2 times.
47:10From 2, we will work 9 times.
47:12So 9 times 5 will be 45.
47:14And from 9 times 5, we will work T.
47:16And from 9 times 5, we will work T.
47:18So this is the right answer.
47:20So how many days will all the work be completed?
47:22Why T is coming this way?
47:24For the remaining work.
47:26So they asked to give the total time.
47:28How many days will all the work be completed?
47:30All the work will be completed after 26 days.
47:3226 days and after that how much work has been done, so 45 days, that is, in total, the whole work has been done for 71 days, how much work has been done, so in total, the whole work has been done for 71 days,
47:44you understand the thing here, okay, so you have to keep this in mind, whenever people estimate that it was food for so many days, this work had to be done in so many days,
47:54so that estimation is never called complete, that estimation is an estimate that yes, it had to be done in so many days, so work done means you will be able to do it in this way,
48:03that the remaining work can be done by so many people here, that is, how many days have passed, so 71 days have passed,
48:09come, see the next question here, the next question is in front of you, and the next question, my brother, what is he saying in front of you, read it,
48:15it is said that n plus 15 workers each working 9 hours can complete this much work in 8 days, then it is said that n plus 9 people can complete the remaining work in 20 days,
48:27if each of them work 7 hours per day, determine the value of n, this will be a very wonderful, very beautiful, very good question, which will explain MDH to you in a good way,
48:39how will it be, my brother, so what you have studied in MDH, what you have studied here, then m1 will be d1, then h1 will be divided by w1, and it will be equal to m2 divided by d2,
48:52and here h2 will be divided by w2, in the question it is said that the number of people in the beginning is so many people, they work for 9 hours and how many days my brother,
49:05so 8 days, so how much is said about the number of people, it is said that n plus 15 days, after that, how much is said about the number of days, 8 days, after that, my brother, what is said here,
49:17so how much is said about the number of days, 8 days, how much is said about the number of hours, so 9 hours, after that, let's talk about w1 here, so how much percentage of work has been completed, so 36%,
49:28so how much percentage of work has been completed, my brother, so 36% of work has been completed, now if we talk, so now it is said here n plus 9 people, so here now the number of people is n plus 9,
49:43after that, how many days have passed here, it is said that sir, 20 days have passed here, how many hours have passed here, it is said that work 7 hours a day,
49:53so now here 20 days and 7 hours and how much percentage of work has been done, how much percentage of work has been done, if he does 30 in 100%, then he will do 70, he will do 40, then he will do 60, he will do 50,
50:03so the total work was 100, these people did 36, so if you reduce 36 out of 100, then 64 will come, then later the deaf people who will wake up suddenly from sleep here and if they see 64,
50:15then they will start screaming, where did it come from, I repeat again for them, the total work is 100% and he did 36 out of 100 here, if you reduce 36 out of 100, then it will come this much,
50:27there is a target of 5, he has made 2, so how much will he make of the remaining, he will make only 3, that's it, so as in the question, what was said here, my brother, in the question, it was said remaining work,
50:39so remaining work means that you took this much of 100, if you have done this much, then this much work is left for you, just rearrange this, my brother, solve this, your answer will come,
50:50if you subtract from 9 in 4 times, if you subtract from 4 in 2 times, then you subtract from 4 in 5 times, and if you subtract from 4, then how many times, 16 times, can we cut more,
51:05then you will say, no, sir, so 16 into 2 is 32, 32 into 2 will be how much, then you will say, Guruji, it will be 32N, after that 16 into 2 is 32, 32 into 2 is how much, then 15 will be 2 times 30, my brother, and 15 will be 45 and 3 will be 48, that is 480,
51:23I have multiplied, I will write again, if someone is having a hard time, then here a person can also write like this, that this is n plus 15, 16 into 2 will be 32, many people say, where did it come from, it does not come from where, it comes like this, and here if you see, then this is n plus 9, and this is my brother 35,
51:44now if you multiply, increase one step, 32 into n will be 32N, and here you will see 15 into 2 is 30, 15 into 3 is 45, and 3 is 48, 35 will be 35N, 9 minus 5 is 45, and here 9 minus 3 is 27, and 4 will be 31, now if we see here, then what will we say,
52:05if we subtract 315 from 480, then how much will we have, 165 will come, how much will come, my brother, 165, and if we subtract 100 from 35, then we have to get 3N, 35 into 32 is 3N, so the number of N will be here, 3 into 5 is 12, and 5 into 12, so what will be the number of N, 55 will come, which option will be there, then A for Aau Kabhi Haveli,
52:29so this is the question of your time and work, all your MDH concept questions, you can make them in the same way, that so and so people worked for so and so day for so and so hour and did so and so percent, now they will do this much, how much will be the N command, then 55 will come,
52:48now the next question is, you try this question and come, we will end today's class here in 93 number questions, then after that we are studying in 6.30, so in quadrilateral, we will move forward and see further,
53:07otherwise Shivam Kumar, if your joining letter has come to India, then you must join, if you have a good post, a good job, your family is happy, because there is a little more competition today, so I think that the job that you get first, you should take it, if you want to get another job while doing it, then take it out, but at least don't leave it, okay, so you understood all the things in a good way, by giving time to MDH concept, you know what it is,
53:34I am leaving a little bit on you, so you can revise it in a good way and we will do it in the future, okay, so you have to read a little bit, but you have to read it in a good way, you have to learn, we have to know all the things and there should be no problem somewhere, there should be no problem somewhere, okay,
53:55take care of yourself and be happy, be happy, if there is a doubt somewhere, then play the same part of the video again and see it, okay, I am sure that if you watch the video again, then there will be no doubt in your mind, there will be no doubt, okay, see you in the next class, that's all for today, thank you very much.