A train 350 m long is running at a speed of 68 kmph. How long does it take to pass a man who is running at 8 kmph in the same direction as the train?  Choose the correct choice from the following answers
A) 5 sec	B) 9 sec	C) 12 sec	D) 21 sec	E) 18 sec
Speed of the train relative to man = (68 - 8) kmph   = (60* 5/18) m/sec = (50/3)m/sec   Time taken by the train to cross the man   = Time taken by It to cover 350 m at 50/3 m / sec   = 350 *3/ 50= 
<gadget id="calculator">350 *3/ 50</gadget>
<output>21</output>
21sec   Answer : 21 sec
<result>D</result>
A train 350 m long is running at a speed of 68 kmph. How long does it take to pass a man who is running at 8 kmph in the same direction as the train?