A person crosses a 600 m long street in 5 minutes. What is his speed in km per hour?
Choose the correct choice from the following answers.
A) 3.6 B) 7.2 C) 8.4 D) 10 E) 9
Speed=(600/5 * 60) m/sec   = 2 m/sec.   Converting m/sec to km/hr   =(2*18/5) km/hr   = 7.2 km/hr.   Answer : 7.2.
<result>B</result>
A person crosses a 600 m long street in 5 minutes. What is his speed in km per hour?