Multiple Choice Questions on A man can row 40 kmph in still water and the river is running at 10 kmph If the man takes 2 hr to ro........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

A man can row 40 kmph in still water and the river is running at 10 kmph If the man takes 2 hr to ro...........

Quantitative Aptitude ( CCS) Boats and Streams
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    A man can row 40 kmph in still water and the river is running at 10 kmph. If the man takes 2 hr to row to a place and back, how far is the place?

    38km

    Incorrect Answer

    37.5km

    Correct Answer

    40.75km

    Incorrect Answer

    41km

    Incorrect Answer
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    Explanation:

    Solution: 
    Given u=40 , v=10
    D= t[(u2-v2)/2u]
    =2*[(402-102)/2*40]
    =2*(1600-100)/80
    2*1500/80==>37.5km

    By: Pranav Gupta
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