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SSC Sample Paper SSC CHSL (10+2) Sample Test Paper-6

  • question_answer
    Some carpenters promised to do a job in 9 days but 5 of them were absent and remaining men did the job in 12 days. The original number of carpenters was

    A)  24                               

    B)  20

    C)  16      

    D)         18

    Correct Answer: B

    Solution :

     Let the original number of carpenters be x, \[{{M}_{1}}{{D}_{1}}={{M}_{2}}{{D}_{2}}\] \[\Rightarrow \]\[x\times 9=(x-5)\times 12\] \[\Rightarrow \]\[9x=12x-60\] \[\Rightarrow \]\[3x=60\] \[\Rightarrow \]\[x=20\]


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