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  1. A train is 360 meter long is running at a speed of 45 km/hour. In what time will it pass a bridge of 140 meter length?
    2. A.
    20 sec
    B.
    30 sec
    C.
    40 sec
    D.
    50 sec

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    Answer : Option C

    Explanation :

    Speed = 45 Km/hr = 45*(5/18) m/sec = 25/2 m/sec

    Total distance = 360+140 = 500 meter 

    Time = Distance/speed 

    = 500 * (2/25) = 40 seconds

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