Question

a person travel with a speed of 10 km per hour and reaches his destination and returned to same path with a speed of 15 kilometre per hour calculate the average speed​

Answer 1

Explanation:

Hey Mate

Average Speed=(V1+V2)/2

here

V1=10km/h

V2=15km/h

So

Avg Speed =(10+15)/2

=25/2

=12.5km/h

Thank you

Regards

Answer 2

Answer:

Let the distance of destination is x.

So total distance is 2x

T(1)=time to reach destination when speed is v1

T(2)=time to reach destination when speed is v2

Now see the attachment.

Here v1=10km/h

v2=15km/h

So avg. Speed =2*10*15/(10+15)

=12km/h