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SSC Sample Paper Mock Test-13 SSC CGL Tear-II Paper-1

  • question_answer
    A and B together can complete a piece of work in 18 days, B and C in 24 days and A and C in 36 days. In how many days, will all of them together complete the work?

    A) 16

    B)  15      

    C)  12

    D)  10

    Correct Answer: A

    Solution :

    (A + B)'s 1 day's work \[=\frac{1}{18}\] (B + Q's 1 day's work \[=\frac{1}{24}\] (A + C)' s 1 day's work \[=\frac{1}{36}\] On adding all three, 2 (A + B + C)'s 1 day's works \[=\frac{1}{18}+\frac{1}{24}+\frac{1}{36}\] \[=\frac{4+3+2}{72}=\frac{1}{8}\] \[\therefore \] (A + B + C)Y 1 day's work \[=\frac{1}{16}\] \[\therefore \] A, B and C together will complete the work in 16 days.


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