A person crosses a 600 m long street in 5 minutes. What is his speed in km per hour?
Choose the correct answer:
A) 3.6	B) 7.2	C) 8.4	D) 10	E) 12
Explanation:   Speed =	(600 / 5 X60)m/sec =2 m/sec.   Converting m/sec to km/hr = (2 X 18/5)km/hr   = 7.2 km/hr.   ANSWER IS 7.2
<result>B</result>
A person crosses a 600 m long street in 5 minutes. What is his speed in km per hour?