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    Question

    A train covers 120 km at a speed of 30 km/hr, then 180

    km at 60 km/hr, and finally 240 km at 120 km/hr. Find the average speed of the train for the entire journey.
    A 68 km/hr Correct Answer Incorrect Answer
    B 58 km/hr Correct Answer Incorrect Answer
    C 60 km/hr Correct Answer Incorrect Answer
    D 65 km/hr Correct Answer Incorrect Answer

    Solution

    The correct answer is C

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