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How many seconds will a 500 metre long train take to cross a man walking with a speed of 3 km/hr in the direction of the moving train if the speed of the train is 63 km/hr?

A. 25

B. 30

C. 40

D. 45

Correct Answer : B.


 Speed of the train relative to man = (63 - 3) km/hr = 60 km/hr = 60 x 518  m/sec = 50 3 m/sec.  Therefore Time taken to pass the man  = 500 x 350 sec  = 30 sec.

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