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Discussion :: Problems on Trains

  1. Two trains 105m and 90m long run at the speeds of 45 kmph and 72 kmph respectively in opposite direction on parallel tracks. The time which they take to cross each other is
    2. A.
    5 sec
    B.
    6 sec
    C.
    7 sec
    D.
    8 sec

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    Answer : Option B

    Explanation :

    Sum of the lengths of the trains = (105 + 90)m = 195m 


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