Real Numbers
This question is related to the topic of Real Numbers
Transcript
00:00This is question number 2 of exercise 1.1 and the chapter is Real Numbers.
00:07This question is taken from the new book that is for grade 9.
00:11In this question, last week Vajat drove 283.4 km on 16.2 litres of petrol, means ki Vajat
00:22ne pichle hafte gadi chalai 283.4 km aur jab petrol usne consume kiya that was 16.2 litres.
00:32He says that he averaged about 1.75 km per litre.
00:38Vajat ka kehna hai average means ke agar hum ek kilometre ke nihaas se malom karein to
00:46usne 1.75 ke average nikali.
00:49Is this answer reasonable?
00:52Humne basically yeh check karna hai ke woh jo keh raha hai woh sahi hai uska answer ya
00:56nahi hai.
00:57First of all, you will make some statements.
01:00Aap easy aur choti se statements banayenge.
01:05Distance travelled, Vajat ne jo distance travelled kiya that is 283.4 km.
01:18Now consumed, now averaged, calculated by Vajat, yeh woh average hai jo Vajat keh raha
01:44hai.
01:49This is 1.75 km per litre.
01:56Ab hum average calculate karenge, average ka formula kya hota hai, average ka formula
02:01yaha pe hota hai, distance covered divided by petrol consumed, kaise kilometre se hume
02:15distance milega aur per litre hai to hum niche kis cheez se divide karenge ki kitna
02:20petrol consumed hua.
02:28Distance travelled is 283.4 and petrol consumed is 16.2.
02:37Agar aap in dono numbers ko divide karenge to aapke paas answer aa raha hai 17.49 km
02:46per litre.
02:48Ab 17.49 aur 1.75 me bahut huge difference hai.
02:54Iska matlab hai jo Vajat ne average calculate ki hai wo theek nahi hai to Vajat ka jo answer
03:02hai wo reasonable nahi hoga.
03:04Aap last mein statement doge, no Vajat's average is not reasonable.