Question

a boy covers 40 metre in first 5 seconds, 40 metre in next 10 seconds and 60 metre in last 15 seconds . find the average speed of the boy

Answer 1

the average speed is 7m/sec

Answer 2

average speed=total distance/total time
=(40+40+60)/(5+10+15)
=140/30
=4.66 m/s

hope this helps
mark branliest if helped