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     EduGorilla 
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    Shankha takes 3.6 hours more to cover 24 km upstream than the same distance downstream. But if he changes his swimming speed by 0.6 times, it takes 1000 minutes less in downstream than upstream for the 24 km distance. Find the speed of the stream.

    Options :-

    1. 5 km/hr.
    2. 3.6 km/hr.
    3. 3 km/hr.
    4. 4.5 km/hr.
    5. None of these
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