Multiple Choice Questions on A man can row 8 kmph in still water If it takes him thrice as long as to row up than to row down The........... for CDS Exam Preparation

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Multiple Choice Questions

A man can row 8 kmph in still water If it takes him thrice as long as to row up than to row down The...........

Quantitative Aptitude (CDS) Boats and Streams
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    A man can row 8 kmph in still water. If it takes him thrice as long as to row up than to row down, Then what is the stream's velocity in kmph?

    2kmph

    Incorrect Answer

    5kmph

    Incorrect Answer

    7kmph

    Incorrect Answer

    4kmph

    Correct Answer
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    Explanation:

    Let the time be "t", speed of the stream be "y" and speed of boat be x.
    So,  3(x-y)×t = (x+y) ×t
     3× (8-y) = 8+y
     24-3y = 8+y
     16 = 4y
     y = 4 kmph

    By: bhavesh kumar singh
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