Multiple Choice Questions on A man can row 8 km hr in still water If it takes him thrice as long to row up as to row down the riv........... for CDS Exam Preparation

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Multiple Choice Questions

A man can row 8 km hr in still water If it takes him thrice as long to row up as to row down the riv...........

Quantitative Aptitude (CDS) Boats and Streams
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    A man can row 8 km/hr in still water. If it takes him thrice as long to row up, as to row down the river, then the rate of current in the stream would be

    6.5km/hr

    Incorrect Answer

    4.5km/hr

    Incorrect Answer

    4km/hr

    Correct Answer

    5.5km/hr

    Incorrect Answer
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    Explanation:

    Solution:
    Ratio 3:1
    u=8km/hr
    (8-v)*3t = (8+v)*t
    24-3v=8+v
    4v=16
    v=4km/hr.

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