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SSC Sample Paper SSC CHSL (10+2) Sample Test Paper-5

  • question_answer
    A and B alone can complete work in 9 days and 18 days respectively worked together; however 3 days before the completion of the work A left. In how many days was the work completed?

    A)  13                               

    B)  8  

    C)  6                    

    D)         5

    Correct Answer: B

    Solution :

     Let the work be completed in \[x\]days. According to the question, A worked for \[(x-3)\] days, while \[B\] worked for\[x\] days. \[\therefore \]      \[\frac{x-3}{9}+\frac{x}{18}=1\] \[\Rightarrow \]   \[\frac{2x-6+x}{18}=1\] \[\Rightarrow \]   \[3x-6=18\] \[\Rightarrow \]   \[3x=18+6=24\] \[\because \]       \[x=\frac{24}{3}=8\]days


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