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  1. A train 540 meters long is running with a speed of 54 kmph. The time taken by it to cross a tunnel 180 meters long is?
    2. A.
    40 sec
    B.
    44 sec
    C.
    48 sec
    D.
    52 sec

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    Answer : Option C

    Explanation :

    D = 540 + 180 = 720

    S = 54 * 5/18 = 15 mps

    T = 720/15 = 48 sec

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