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    Question

    A train passes an electrical pole in 15 seconds and

    passes a platform 420 m long in 60 seconds. Find the length of the train.
    A 140 m Correct Answer Incorrect Answer
    B 160 m Correct Answer Incorrect Answer
    C 120 m Correct Answer Incorrect Answer
    D 150 m Correct Answer Incorrect Answer

    Solution

    Let the length of the train be тАШxтАЩ meter. тИ┤ x/15 = (x + 420)/60 тЗТ 60x = 15x + 6300 тЗТ 45x = 6300 тЗТ x = 140 m

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