Question

A car drives from A to B with a uniform speed of 30kmph and returns back with a speed of 20kmph. Find its average speed

Answer 1

Let distance be x.
Then total distance is 2x.

Time=distance/speed
speed=30kmph
so time 1 = x/30

Now on returning speed = 20kmph

So time 2 = x/20

Total time= x/30+x/20

Now average speed = Total diatance/Total time

average speed = 2x/ x/30+x/20

2x * 12

average speed = 24 kmph

I hope it helps

Answer 2

25 is the averrage speed