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SSC Sample Paper SSC-CGL TIER - I Sample Test Paper-8

  • question_answer
    Shalini in 20 days and Preeti in 30 days complete a work. If they work together for 5 days and thereafter Shalini leaves the job and Preeti works till in end. Then in what days the whole work will be completed?

    A) \[~17\frac{1}{2}days\]              

    B) \[~20\frac{1}{2}days\]

    C) \[~22\frac{1}{2}days\]             

    D) \[25\frac{1}{2}days\]

    Correct Answer: C

    Solution :

    Work done by Shalini in 5 days = \[\frac{5}{20}\] Suppose Preeti completes the remaining work in x days then, \[\frac{5}{20}+\frac{x+5}{30}=1\] \[\Rightarrow \,\,\,\,\,2x=60-25\Rightarrow x=\frac{35}{2}\,\,days\] \[\therefore \,\,\,\,\,\,\,Total\,\,no.\,\,of\,\,days=\left( \frac{35}{2}+5 \right)days\] =         \[\]


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