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SSC Sample Paper SSC (Group-C) Sample Test Paper-6

  • question_answer
    Mohan gets 3 marks for each correct sum and loses 2 marks for each wrong sum. He attempts 30 sums and obtains 40 marks. The number of sums solved correctly is:

    A)  15                              

    B)  20

    C)  25                  

    D)       10

    Correct Answer: B

    Solution :

     If the number of correct sums be Rs. x, then. \[x\times 3-(30-x)\times 2=40\] \[\Rightarrow \]            \[3x-60+2x=40\] \[\Rightarrow \]            \[5x=60+40=100\] \[\Rightarrow \]            \[x=20\]


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