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    Question

    A truck covers the distance from Depot A to Depot B at 30

    km/h and returns at 45 km/h. Find its average speed.
    A 54 km Correct Answer Incorrect Answer
    B 36 km Correct Answer Incorrect Answer
    C 65 km Correct Answer Incorrect Answer
    D 78 km Correct Answer Incorrect Answer

    Solution

    ATQ,

    Average speed = (2 × 30 × 45) ÷ (30 + 45) = 2700 ÷ 75 = 36 km/h

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