Multiple Choice Questions on An alone can do a work in 12 days B alone can do the same work in 15 days C alone can do the same wo........... for CDS Exam Preparation

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Multiple Choice Questions

An alone can do a work in 12 days B alone can do the same work in 15 days C alone can do the same wo...........

Quantitative Aptitude (CDS) Time and work
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    An alone can do a work in 12 days, B alone can do the same work in 15 days, C alone can do the same work in 20 days. In how many days A, B, 7daysC together can start and finish the same work?

    7days

    Incorrect Answer

    4days

    Incorrect Answer

    5days

    Correct Answer

    8days

    Incorrect Answer
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    Explanation:

    According to question,
    x/12+x/15+x/20 =  1
    = x/5 = 1
    x = 5days

    By: bhavesh kumar singh
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