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    Question

    A man rows a boat 24 km downstream in 3 hours and rows

    the same distance upstream in 4 hours. What is the speed of the boat in still water?
    A 5 km/h Correct Answer Incorrect Answer
    B 7 km/h Correct Answer Incorrect Answer
    C 3 km/h Correct Answer Incorrect Answer
    D 9 km/h Correct Answer Incorrect Answer

    Solution

    ATQ, Downstream speed = 24/3 = 8 km/h. Upstream speed = 24/4 = 6 km/h. Speed of boat in still water = (8 + 6)/2 = 7 km/h.

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