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  1. A train of 24 carriages, each of 60 meters length, when an engine also of 60 meters length is running at a speed of 60 kmph. In what time will the train cross a bridge 1.5 km long?
    2. A.
    1 ½ mins
    B.
    3 mins
    C.
    3 ½ mins
    D.
    7 mins

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    Answer : Option B

    Explanation :

    D = 25 * 60 + 1500 = 3000 m

    T = 3000/60 * 18/5 = 180 sec = 3 mins

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