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SSC Sample Paper SSC-CGL TIER - I Sample Test Paper-3

  • question_answer
    A contractor undertook the responsibility to complete a road in 120 days. He deployed 100 persons at the work and after 45 days he found only\[\frac{1}{4}\]. Part completed. To complete the work on time, number of extra persons required is -

    A) 120                  

    B) 160

    C) 80                    

    D) 270

    Correct Answer: C

    Solution :

    \[\frac{100\times 45}{\frac{1}{4}}=\frac{{{m}_{2}}\times (120-45)}{\left( 1-\frac{1}{4} \right)}\] \[\therefore {{M}_{2}}=\frac{100\times 45\times 3\times 4}{75\times 4\times 1}=80\] \[\therefore \] Required number of men = 180 -100 = [80]


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