A person crosses a 300 m long street in 4 minutes. What is his speed in km per hour?
Pick
A) 1.6 B) 4.5 C) 8.2 D) 6.5 E) 2.9
distance = 300 meter   time = 4 minutes = 4 x 60 seconds = 240 seconds   Speed = distance/time=300/240= 
<gadget id="calculator">300/240</gadget>
<output>5/4 = around 1.25</output>
1.25 m/s=1.25Ã—18/5 km/hr=4.5 km/hr   Answer :4.5
<result>B</result>
A person crosses a 300 m long street in 4 minutes. What is his speed in km per hour?