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     EduGorilla 
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    A boat goes upstream 21 miles and downstream 42 miles in 13 hours. Under identical circumstances, it also goes upstream 36 miles and downstream 49 miles in 19 hours. Find the speed of the flow of water in the stream and that of the boat in a fresh-water lake where the water is still, respectively. Both the speeds are to be determined in miles per hour.

    Options :-

    1. 3, 6
    2. 3, 5
    3. 2, 5
    4. 2, 4
    5. None of these
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