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Discussion :: Problems on Trains

  1. A train passes a station platform in 36 seconds and a man standing on the platform in 20 seconds. If the speed of the train is 54 km/hr, what is the length of the platform?
    2. A.
    120 m
    B.
    240 m
    C.
    300 m
    D.
    None of these

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    Answer : Option B

    Explanation :

    Speed = (54 * 5/18) m/sec = 15 m/sec. Length of the train = (15 x 20)m = 300 m. Let the length of the platform be x meters. Then, (x + 300)/36 = 15 ==> x + 300 = 540 ==> x = 240 m.

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