Multiple Choice Questions on P is twice as efficient as Q Q takes 12 days to complete a job If both of them work together h........... for RRB(NTPC) Exam Preparation

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Multiple Choice Questions

P is twice as efficient as Q Q takes 12 days to complete a job If both of them work together h...........

Quantitative Aptitude (RRB NTPC) Time and work
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     P is twice as efficient as Q. Q takes 12 days to complete a job. If both of them work together, how much time will they take to complete the job?

    6 days

    Incorrect Answer

    5 days

    Incorrect Answer

    4 days

    Correct Answer

    3 days

    Incorrect Answer
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    Explanation:
    P:Q=2:1 [efficiency]
    Q takes 12 days
    P takes 6 days
    Time taken by both =12/3= 4 days

    By: Barka Mirza
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