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    Question

    A car travels at 60 km/h for 1 hour, 45 km/h for 2

    hours, and 90 km/h for 1 hour. Find its average speed.
    A 45 km/h Correct Answer Incorrect Answer
    B 60 km/h Correct Answer Incorrect Answer
    C 47 km/h Correct Answer Incorrect Answer
    D 33 km/h Correct Answer Incorrect Answer

    Solution

    Total distance = 60×1 + 45×2 + 90×1 = 240 km Total time = 1 + 2 + 1 = 4 hours Average speed = 240/4 = 60 km/h

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