Multiple Choice Questions on If m persons can paint a house in d days how many days will it take for m 2 persons to paint the sam........... for CDS Exam Preparation

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Multiple Choice Questions

If m persons can paint a house in d days how many days will it take for m 2 persons to paint the sam...........

Quantitative Aptitude (CDS) Time and work
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    If m persons can paint a house in d days, how many days will it take for (m + 2) persons to paint the same house?

    md + 2

    Incorrect Answer

    md – 2

    Incorrect Answer

    m + 2/md

    Incorrect Answer

    md/ m + 2

    Correct Answer
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    Explanation:

    M1×D1=M2×D2
    ⇒m×d=(m+2×D2)
    D2=md/(m+2)

    Thus, the number of days taken is md/(m+2)

    By: Munesh Kumari
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