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Discussion :: Boats and Streams

  1. A man swims downstream 30 km and upstream 18 km taking 3 hours each time, what is the speed of the man in still water?
    2. A.
    2 kmph
    B.
    8 kmph
    C.
    16 kmph
    D.
    4 kmph

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    Answer : Option B

    Explanation :

    30 --- 3             DS = 10

    ? ---- 1

    18 ---- 3            US = 6

    ? ---- 1              M = ?

    M = (10 + 6)/2 = 8

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