A person crosses a 600600 metre long street in 55 minutes. What is his speed in km per hour?
Select the correct option:
A) 8.2 B) 4.2 C) 6.1 D) 7.2 E) 9.1
Explanation:   Solution 17.2istance =600=600 metre =0.6=0.6 km   Time =5=5 minutes =112=112 hour   Speed=distancetime=0.6(112)Speed=distancetime=0.6(112) =7.2 km/hr   Answer is 7.2
<result>D</result>
A person crosses a 600600 metre long street in 55 minutes. What is his speed in km per hour?