A train passes a man standing on the platform. If the train is 60 meters long and its speed is 72 kmph, how much time it took in doing so?  Choose the correct choice:
A) 6 ½ sec  B) 4 ½ sec  C) 6 sec  D) 3 sec  E) 2 ½ sec
3 sec = 60   S = 72 * 5/18= 
<gadget id="calculator">72 * 5/18</gadget>
<output>20</output>
20 mps   T= 60/20= 
<gadget id="calculator">60/20</gadget>
<output>3</output>
3 sec   Answer: 3 sec
<result>D</result>
A train passes a man standing on the platform. If the train is 60 meters long and its speed is 72 kmph, how much time it took in doing so?