A train which has 400 m long, is running 50 kmph. In what time will it cross a person moving at 14 kmph in same direction ?\nOptions:\n(A) 40 sec\n(B) 35 sec\n(C) 33 sec\n(D) 42 sec\n(E) 41 sec OK. Let's think. Some random thoughts first:
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Time taken to cross a moving person = length of train/ relative speed\nTime taken = 400/((50-14) (5/18) = 400/ 36*(5/18) = 400/10 = 40 sec The answer: (A).
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