Multiple Choice Questions on A B and C does work in 10 12 and 15 days respectively They started work after two days B leaves the ........... for CDS Exam Preparation

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Multiple Choice Questions

A B and C does work in 10 12 and 15 days respectively They started work after two days B leaves the ...........

Quantitative Aptitude (CDS) Time & distance
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    A B and C does work in 10,12 and 15 days respectively. They started work after two days B leaves the job, find the Time taken by A and C to complete the job?

    5 days

    Incorrect Answer

    3 days

    Correct Answer

    6 days

    Incorrect Answer

    8 days

    Incorrect Answer
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    Explanation:

    A work 10 days

    B work 12 days

    C work 15 days

    2 days work

    2(1/10  +1/12  +1/15 )

    2(1/10 +1/12+1/15)

    (12+10+8) /60

    30/60

    =1/2

    Remaining work=1-1/2

                               =1/2

    Let A and C take x days

     X(1/10  +1/15) =1/2

    X(3 +2) =15

    X=3 days

    By: bhavesh kumar singh
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