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    Question

    A 160 m long train crosses another 320 m long train

    running in the opposite direction in 12 seconds. If the shorter train crosses a pole in 16 seconds, what is the speed of longer train?
    A 108 km/hr Correct Answer Incorrect Answer
    B 90 km/hr Correct Answer Incorrect Answer
    C 63 km/hr Correct Answer Incorrect Answer
    D 60 km/hr Correct Answer Incorrect Answer
    E 81 km/hr Correct Answer Incorrect Answer

    Solution

    Speed of the shorter train = 160/16 = 10 m/sec Let the speed of the longer train be x km/hr According to the question, ⇒ (10 + x) = (160 + 320)/12 ⇒ 10 + x = 480/12 ⇒ x = 40 – 10 = 30 ⇒ x = 30 x 18/5 = 108 km/hr

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