Question

    A train moving at a speed of 72 km/h takes 12.5 seconds

    to pass a pole. If the train takes 24 seconds to completely cross a platform, what is the length of the platform?
    A 220 metres Correct Answer Incorrect Answer
    B 210 metres Correct Answer Incorrect Answer
    C 230 metres Correct Answer Incorrect Answer
    D 240 metres Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Speed of train = 72 × 5/18 = 20 m/s Length of train = 20 × 12.5 = 250 metres Length of platform = 24 × 20 – 250 = 230 metres

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