Multiple Choice Questions on A man can row 15 km h in still water and he finds that it takes him twice as much time to row up tha........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

A man can row 15 km h in still water and he finds that it takes him twice as much time to row up tha...........

Quantitative Aptitude ( CCS) Boats and Streams
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    A man can row 15 km/h in still water and he finds that it takes him twice as much time to row up than as to row down the same distance in the river. The speed of current (in km/h) :

    7km/hr

    Incorrect Answer

    6km/hr

    Incorrect Answer

    8km/hr

    Incorrect Answer

    5km/hr

    Correct Answer
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    Explanation:

    Solution:
    Let the speed of the current be x km/h. Now, according to the question,
    (15+x)/(15-x) = 2/1.
    15+x = 30-2x
    3x = 30-15
    3x = 15
    x = 5 km/hr.

    By: Pranav Gupta
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