Ramu crosses a 1000 m long street in 10 minutes. What is his speed in km per hour?  Choose the correct choice from the following answers.
A) 5.6km/hr  B) 7.2km/hr  C) 3.6km/hr  D) 5.9km/hr  E) 10km/hr
Speed =1000/10 *60 = 1.66m/sec   Converting m/sec to km/hr .   =1.66*18/5=5.9km/hr   Answer is 5.9km/hr
<result>D</result>
Ramu crosses a 1000 m long street in 10 minutes. What is his speed in km per hour?