Question

    A train moving at a speed of 135

    km/h takes 6 seconds to pass a stationary vertical tree. How long will it take for the train to completely cross a platform that is 450 meters long?
    A 18 secs Correct Answer Incorrect Answer
    B 12 secs Correct Answer Incorrect Answer
    C 20 secs Correct Answer Incorrect Answer
    D 24 secs Correct Answer Incorrect Answer

    Solution

    ATQ, Speed of train = 135 × (5/18) = 37.5 /sec Therefore, length of the train = 37.5 × 6 = 225 metres Time taken by the train to cross the platform = (225 + 450)/37.5 = 18 seconds

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