A person crosses a 600 m long street in 5 minutes. What is his speed in km per hour?  Choose the correct option:	A) 3.6	B) 7.2	C) 8.4	D) 10	E) None of these
Speed=(600/5*60)m/sec=2 m/sec=(2*18/5)km/hr=7.2km/hr.   Correct Option: 7.2
<result>B</result>
A person crosses a 600 m long street in 5 minutes. What is his speed in km per hour?