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SSC Sample Paper Mock Test-7 SSC CGL Tear-II Paper-1

  • question_answer
    If 50% of \[(x-y)=30%\] of \[(x+y)\], then what per cent

    A)  \[25%\]

    B)  \[33\frac{1}{3}%\]

    C)  \[40%\]

    D)  \[400%\]

    Correct Answer: A

    Solution :

    \[\frac{30}{100}(x+y)=\frac{50}{100}(x-y)\] \[\Rightarrow \]   \[30x+30y=50x-50y\] \[\Rightarrow \]               \[80y=20x\] \[\Rightarrow \]               \[y=\frac{20}{80}x=\frac{1}{4}x\] \[\Rightarrow \] y is 25% of x.


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