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    Question

    A man can row at 4 kmph in still water. If the velocity

    of current is 2 kmph and it takes him 8 hour to row to a place and come back, how far is the place?
    A 5 km Correct Answer Incorrect Answer
    B 7 km Correct Answer Incorrect Answer
    C 8 km Correct Answer Incorrect Answer
    D 12 km Correct Answer Incorrect Answer
    E 3 km Correct Answer Incorrect Answer

    Solution

    Let the distance be x km. Speed upstream = 4 – 2 = 2 kmph Speed downstream = 4 + 2 = 6 kmph => (x/6) + (x/2) = 8 => (x + 3x)/6 = 8 => 4x = 48 => x = 12 km

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