Multiple Choice Questions on Arun is twice efficient as Bala and together they do the same work in as much time as Chitra and Dav........... for SSC CGL Exam Preparation

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Multiple Choice Questions

Arun is twice efficient as Bala and together they do the same work in as much time as Chitra and Dav...........

Quantitative Aptitude (CGL) Time and work
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    Arun is twice efficient as Bala and together they do the same work in as much time as Chitra and David together. If Chitra and David can complete the work in 20 and 30 days respectively, working alone, then in how many days A can complete the work individually?

    12 days

    Incorrect Answer

    18 days

    Correct Answer

    24 days

    Incorrect Answer

    30 days

    Incorrect Answer
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    Explanation:

    Explanation :
    1/x + 1/2x = 1/20 + 1/30
    3/2x = 1/12
    Number of days taken by Arun = 18 days

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