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SSC Sample Paper Mock Test-3 SSC CGL Tear-II Paper-1

  • question_answer
    If 15% of (A + B) = 25% of \[(A-B),\]then what per cent of B is equal to A?

    A)  10%                

    B)  60%   

    C)  200%              

    D)  400%

    Correct Answer: D

    Solution :

    15% of \[(A+B)=25%\]of \[(A-B)\] \[\Rightarrow \]   \[\frac{15}{100}\,\,(A+B)=\frac{25}{100}(A-B)\] \[\Rightarrow \]   \[15\,\,(A+B)=25\,\,(A-B)\] \[\Rightarrow \]   \[15A+15B=25A-25B\] \[\Rightarrow \]   \[10A=40B\] \[\Rightarrow \]   \[A=4B\] Now, let x % of B is equal to A \[\therefore \]      \[\frac{x}{100}\times B=A\] \[\frac{x}{100}\times =4B\] \[\therefore \]      \[x=400%\]


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