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    Question

    A train, running at the speed of 72 km/h, is 300 metres

    long. How much time (in seconds) will it take to pass over a bridge that is 600 metres long?
    A 20 secs Correct Answer Incorrect Answer
    B 18 secs Correct Answer Incorrect Answer
    C 30 secs Correct Answer Incorrect Answer
    D 45 secs Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ;
    Speed of train = 72 km/h = 72 × (5/18) = 20 m/s

    Required time = (300 + 600) ÷ 20 = 900 ÷ 20 = 45 seconds

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