Question

    A person travels to a certain place at a speed of 30

    km/h and returns to the starting place at a speed of 20 km/h. Find his average speed (in km/h) during the entire journey. 
    A 20 Correct Answer Incorrect Answer
    B 24 Correct Answer Incorrect Answer
    C 12 Correct Answer Incorrect Answer
    D 48 Correct Answer Incorrect Answer

    Solution

    The correct answer is B

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