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Discussion :: Problems on Trains

  1. A train 108 m long moving at a speed of 50 km/hr crosses a train 112 m long coming from opposite direction in 6 seconds. The speed of the second train is:

    2. A.

    48 km/hr
    B.

    54 km/hr
    C.

    66 km/hr
    D.

    82 km/hr

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    Answer : Option D

    Explanation :

    Let the speed of the second train be x km/hr.

     

    Relative speed = (x + 50) km/hr
      = ((x+50)×(518))m/sec
      = (250+5x18)m/sec

    Distance covered = (108 + 112) = 220 m.

     

    Therefore220(250+5x18)=6


     250 + 5x = 660

     

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