Multiple Choice Questions on A is 2 times efficient than B They complete a work in 12 days If they do a work alone How many days ........... for CDS Exam Preparation

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Multiple Choice Questions

A is 2 times efficient than B They complete a work in 12 days If they do a work alone How many days ...........

Quantitative Aptitude (CDS) Time & distance
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    A is 2 times efficient than B. They complete a work in 12 days. If they do a work alone. How many days they will complete?

    9 days and 18 days

    Correct Answer

    10 days and 12 days

    Incorrect Answer

    6 days and 12 days

    Incorrect Answer

    10 days and 18 days

    Incorrect Answer
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    Explanation:

    Let A x days and B does 2x days

    12(1/x  +1/2x) =1

    12/x  =2/3

    X=18 days

    A will do 9 days

    By: bhavesh kumar singh
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