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Discussion :: Boats and Streams

  1. The speed at which a man can row a boat in still water is 15 kmph. If he rows downstream, where the speed of current is 3 kmph, what time will he take to cover 60 metres?
    2. A.
    10 seconds
    B.
    15 seconds
    C.
    20 seconds
    D.
    12 seconds
    E.
    None of these

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    Answer : Option D

    Explanation :

    Speed of the boat downstream = 15 + 3 = 18 kmph

    = 18 * 5/18 = 5 m/s

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