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    Question

    A man travelled at a speed of 20 m/min for 100 min, and

    at a speed of 70 m/min for 50 min. His average speed is:
    A 3.5 m/min Correct Answer Incorrect Answer
    B 70/3 m/min Correct Answer Incorrect Answer
    C 25 m/min Correct Answer Incorrect Answer
    D 110/3 m/min Correct Answer Incorrect Answer

    Solution

    The correct answer is D

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