Multiple Choice Questions on A boat can move at 10 kmph in still water If the stream is flowing at 2kmph and if it takes 5 hours ........... for CDS Exam Preparation

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Multiple Choice Questions

A boat can move at 10 kmph in still water If the stream is flowing at 2kmph and if it takes 5 hours ...........

Quantitative Aptitude (CDS) Boats and Streams
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    A boat can move at 10 kmph in still water. If the stream is flowing at 2kmph and if it takes 5 hours for the boat to row a place and back. How far is the place?

    20km

    Incorrect Answer

    24km

    Correct Answer

    28km

    Incorrect Answer

    32km

    Incorrect Answer
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    Explanation:

    Speed of boat (x) = 10 kmph
    speed of stream (y) =  2kmph
    Upstream + downstream = 5 
    d/8 + d/12 = 5
    d(20/96) = 5
    d = (96×5)/20
    d = 24km

    By: bhavesh kumar singh
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