00:01
Hello, i am a teacher for this question and a question says that town a and b are 30 miles apart.
00:09
If you drive at 30 miles per hour from town a to town b, how fast would you need to drive on the return trip to average 60 miles per hour? so how are we going to solve this question? just see that town a and b are set to be 30 miles apart.
00:23
Town a and we are 30 miles apart.
00:30
It is being already said.
00:33
Then we have been said that if you drive at 30 miles per hour from town a to town b.
00:40
From town a to town b you drive at 30 miles per hour.
00:48
And then and after how fast would you need to drive on the return trip to have a.
00:55
So, to average 60 miles per hour.
00:57
So on the return tip, how fast you need to travel.
01:00
So let's say on the return tip it travels at x miles per hour.
01:08
Alright, to average 60 miles per hour.
01:11
So average speed has to be 60 miles per half.
01:22
Alright.
01:23
Now just see that i will be writing, i will be writing that while going to be going to be, you going from a to b, from a to b time taken.
01:32
From a to be time taken is let's say the distance upon speed.
01:39
So that is distance by speed, distance divided by speed.
01:43
So 30 miles over 30 miles per hour.
01:45
So you will be writing this as one hour.
01:48
All right.
01:49
Then and after from b to a, b to a time taken is 30 by x.
01:58
Hard, all right.
02:00
Now what i will be writing ahead is that is average speed is total distance by total time taken, total time taken, all right.
02:22
So, i will be writing this as, i will be writing this as let's say total distance is 30 plus 30.
02:29
30 is when from a to b, from b to a also 30...