A person crosses a 600 m long street in 5 minutes. What is his speed in km/hr?

A person crosses a 600 m long street in 5 minutes. What is his speed in km/hr?

A 3.6

B 7.2

C 8.4

D 10

Solution

Correct Answer: Option B

distance = 680 meter time = 5 minutes = 5 x 60 seconds = 300 seconds

Speed = distance/time=600/300=2m/s=2×18/5 km/hr

=7.2km/hr