Some question: A train which has 390 m long, is running 45 kmph. In what time will it cross a person moving at 9 kmph in same direction ?\nOptions:\n(A) 26 sec\n(B) 39 sec\n(C) 36 sec\n(D) 29 sec\n(E) 30 sec
Some stream of consciousness:
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Time taken to cross a moving person = length of train/ relative speed\nTime taken = 390/((45-9) (5/18) = 390/ 36*(5/18) = 390/10 = 39 sec The answer: (B).
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