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    Question

    A Man Rows upstream 36 km and downstream 48 kilometers

    taking 6 hours each time the speed of the current is.
    A 1km/h Correct Answer Incorrect Answer
    B 7km/h Correct Answer Incorrect Answer
    C 8km/h Correct Answer Incorrect Answer
    D 6km/h Correct Answer Incorrect Answer

    Solution

    Let the speed of boat in still water =B and speed of stream =S Speed in downstream (B+S) =48/6=8km/h Speed in upstream =B-S =36/6=6km/h B+S=8тАж (1) B-S=6┬а тАж (2) After solving Eq (1) and (2) B =7km/h S=1km/h Speed of stream =1km/h

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