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Discussion :: Problems on Trains

  1. A train running at the speed of 60 km/hr crosses a pole in 9 seconds. What is the length of the train?

    2. A.
    120 metres
    B.
    180 metres
    C.
    324 metres
    D.
    150 metres

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    Answer : Option D

    Explanation :

    Speed of the train relative to man = 1-sym-oparen-h1 125 1-sym-cparen-h1m/sec
    10
       = 1-sym-oparen-h1 25 1-sym-cparen-h1m/sec.
    2
       = 1-sym-oparen-h1 25 x 18 1-sym-cparen-h1km/hr
    2 5

       = 45 km/hr.

    Let the speed of the train be x km/hr. Then, relative speed = (x - 5) km/hr.

     x - 5 = 45          x = 50 km/hr.

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