Multiple Choice Questions on A can do a piece of work in 10 days and B can do the same work in 20 days B and C together finish th........... for CDS Exam Preparation

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Multiple Choice Questions

A can do a piece of work in 10 days and B can do the same work in 20 days B and C together finish th...........

Quantitative Aptitude (CDS) Time and work
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    A can do a piece of work in 10 days and B can do the same work in 20 days,B and C together finish the work in 5 days .C will finish the work?

    6 days
     

    Incorrect Answer

    5 days
     

    Incorrect Answer

    6(2/3)days
     

    Correct Answer

    8 days

    Incorrect Answer
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    Explanation:

     B and C together finish work in 5 days
     B alone 20 days
     1/20 +1/c =1/5
     1/c =(4-1)/20
      =3/20
     C alone finish the work in 6(2/3) days

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