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Discussion :: Problems on Trains

  1. Two trains of equal length are running on parallel lines in the same direction at 46 km/hr and 36 km/hr. The faster train passes the slower train in 36 seconds. The length of each train is:

    2. A.
    50 m
    B.
    72 m
    C.
    80 m
    D.
    82 m

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    Answer : Option A

    Explanation :

    Let the length of each train be x metres.

    Then, distance covered = 2x metres.

    Relative speed = (46 - 36) km/hr

       = 1-sym-oparen-h1 10 x 5 1-sym-cparen-h1m/sec
    18
       = 1-sym-oparen-h1 25 1-sym-cparen-h1m/sec
    9
    2x = 25
    36 9

     2x = 100

     x = 50.

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