A person crosses a 1800 m long street in 12 minutes. What is his speed in km per hour?
Choose the correct choice from the following choices
A) 4.1	B) 4.5	C) 4.8	D) 5.4	E) 9
Speed = 1800/(12x60) m/sec   = 2.5 m/sec.   Converting m/sec to km/hr =2.5 x(18/5) km/hr   = 9 km/hr.   ANSW9R :9
<result>E</result>
A person crosses a 1800 m long street in 12 minutes. What is his speed in km per hour?