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Discussion :: Problems on Trains

  1. A train 400 m long can cross an electric pole in 20 sec and then find the speed of the train?
    2. A.
    65 Kmph
    B.
    70 Kmph
    C.
    72 Kmph
    D.
    75 Kmph

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    Answer : Option C

    Explanation :

    Length = Speed * time

    Speed = L/T 

    S = 400/20

    S = 20 M/Sec 

    Speed= 20*18/5 (To convert M/Sec in to Kmph multiply by 18/5)

    Speed = 72 Kmph

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