A train 150 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 one:
A) 5 sec
B) 9 sec
C) 12 sec
D) 18 sec
E) 15 sec
Answer : B.   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 150 m at 50/3 m / sec = 150 *3/ 50= 
<gadget id="calculator">150 *3/ 50</gadget>
<output>9</output>
9sec
<result>B</result>
A train 150 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?