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  1. A train passes a man standing on the platform. If the train is 170 meters long and its speed is 72 kmph, how much time it took in doing so?
    2. A.
    10 ½ sec
    B.
    9 ½ sec
    C.
    8 ¾ sec
    D.
    8 ½ sec

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    Answer : Option D

    Explanation :

    D = 170

    S = 72 * 5/18 = 20 mps

    T = 170/20 = 8 ½ sec

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