Multiple Choice Questions on A and B can work together and finish a work in 15 days while B alone can do that work in 20 days in ........... for CDS Exam Preparation

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Multiple Choice Questions

A and B can work together and finish a work in 15 days while B alone can do that work in 20 days in ...........

Quantitative Aptitude (CDS) Time and work
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    A and B can work together and finish a work in 15 days, while B alone can do that work in 20 days, in how many days can A  be finished working alone?

    20

    Incorrect Answer

    40

    Incorrect Answer

    50

    Incorrect Answer

    60

    Correct Answer
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    Explanation:

    1/A + 1/B = 1/15 and 1/ B = 1/20 then ,

    1/A= 1/15 - 1/20 = 1/60

    A can finish that work in 60 days

    By: bhavesh kumar singh
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