Question

A person swims 100m in the first 40s ,80 m in the next 40s and 45m in the last 20 s what is the average speed

Answer 1

Hey friend,

Average speed =Total distance covered /Total time taken

Distance covered = 100+80+45=225m

Time taken = 40+40+20=100s

Average speed = 225m/100s
= 9/4m/s
Or 2.25m/s

HOPE IT HELPS YOU..

Answer 2

Average speed = Total distance \ Total time taken
Now I think u can solve this