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     EduGorilla 
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    A boat goes 21 miles upstream and 42 miles downstream in 13 hours. It also goes 36 miles upstream and 49 miles downstream in 19 hours. What is the speed of the stream and that of the boat?

    Options :-

    1. 6 mph and 3 mph
    2. 5 mph and 3 mph
    3. 5 mph and 2 mph
    4. 4 mph and 2 mph
    5. None of these
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