Question

A body covers a distance with a speed of 40 km/h in 3 hours, next few kilometers with a speed of 80 km/h in an hour and at last covers the distance in 60 km/h in 2 hours. Find the average speed of the body.

Answer 1

Answer:

◦•●◉✿Let the each half of the running time be t.

During first half time, speed of car is 80 km/h

Distance covered d

1

=80t km

During second half time, speed of car is 40 km/h

Distance covered d

2

=40t km

Total distance covered d=d

1

+d

2

=80t+40t=120t

Total time taken T=2t

Average speed v

avg

=

T

d

=

2t

120t

=60 km/hr✿◉●•◦

Explanation:

◦•●◉✿I hope it's helpful for you✌✿◉●•◦