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    Question

    A train travelling with a speed of 90 km/h can cross a

    pole in 8 seconds. Find the time taken by the train to cross a 220 metres long platform if the speed of train is increased by 20%.
    A 15 seconds Correct Answer Incorrect Answer
    B 22.5 seconds Correct Answer Incorrect Answer
    C 14 seconds Correct Answer Incorrect Answer
    D 10 seconds Correct Answer Incorrect Answer
    E 16 seconds Correct Answer Incorrect Answer

    Solution

    Speed of train = 90 × 5/18 = 25 m/s Length of train = 25 × 8 = 220 metres Desired time = (220 + 90)/(1.20 × 25) = 14 seconds

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