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    Question

    A 725 m long train passes a tunnel 235 m long in 48

    seconds. Find the speed of the train.
    A 42 km/h Correct Answer Incorrect Answer
    B 72 km/h Correct Answer Incorrect Answer
    C 36 km/h Correct Answer Incorrect Answer
    D 100 km/h Correct Answer Incorrect Answer

    Solution

    According to the concept, The train had covered 725 + 235 = 960 m Speed of the train in m/sec = 960/48 ⇒ 20 m/sec Speed of the train in km/h = 20 × (18/5) ⇒ 72 km/h ∴ The speed of the train is 72 km/h.

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