Question

a student while going to school in a same bus ,observes the average speed to be 20kmph and while his way back to home he observed the average speed to be 30kmph what is the total average speed??

Answer 1

2*20*30/ 20+30
=24kmph
hope it helps
formula used. 2v1 v2/v1+v2

Answer 2

Hey there!

We know that

Given,

x = 20 kmph

y = 30 kmph

Average speed = 2 xy / x + y = 2*20*30/20+30

=24 kmph.