A person crosses a 600m long street in 3 minnutes. What is his speed in km per hour?
Pick one
A) 5.8km/hr
B) 7.2km/hr
C) 9km/hr
D) 12km/hr
E) 3km/hr
Speed = 600/3*60 = 3.33m/sec   =3.33*18/5   =12km/hr   Answer is 12km/hr
<result>D</result>
A person crosses a 600m long street in 3 minnutes. What is his speed in km per hour?