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    Question

    A boat covers a distance of 96 km downstream in 4 hours

    and returns upstream in 6 hours. Find the speed of the stream.
    A 1 km/h Correct Answer Incorrect Answer
    B 2 km/h Correct Answer Incorrect Answer
    C 3 km/h Correct Answer Incorrect Answer
    D 4 km/h Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Downstream speed = 96 / 4 = 24 km/h Upstream speed = 96 / 6 = 16 km/h Speed of stream = (Downstream speed - Upstream speed) / 2 Speed of stream = (24 - 16) / 2 = 8 / 2 = 4 km/h Correct Option: d) 4 km/h

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