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Discussion :: Problems on Trains

  1. A 270 metres long train running at the speed of 120 kmph crosses another train running in opposite direction at the speed of 80 kmph in 9 seconds. What is the length of the other train?

  2. A.
    230 m
    B.
    240 m
    C.
    260 m
    D.
    320 m
    E.
    None of these

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    Answer : Option A

    Explanation :

    Relative speed = (120 + 80) km/hr

       = 1-sym-oparen-h1 200 x 5 1-sym-cparen-h1m/sec
    18
       = 1-sym-oparen-h1 500 1-sym-cparen-h1m/sec.
    9

    Let the length of the other train be x metres.

    Then, x + 270 = 500
    9 9

     x + 270 = 500

     x = 230.


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