The speed of a man is 4/5th the speed of a bicycle. The bicycle covers 125 m in 5 seconds. How much time will the man take to cover 40 m?

A 2 second

B 4 second

C 6 second

D 8 second

E None of these

Correct Answer: Option A

As the bicycle covers 125 m in 5 seconds

∴ Speed of the bicycle = 125/5 = 25 m/s

As the speed of a man is 4/5th the speed of a bicycle

∴ Speed of man = (4/5) × 25 = 20 m/s

Hence Time taken by the man to cover 40 m = 40/20 = 2 second