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SSC Quantitative Aptitude Percentage Question Bank Percentage (II)

  • question_answer
    If a number multiplied by 25% of itself gives a number which is 200% more than the number, then the number is

    A) 12

    B) 16

    C) 20

    D) 24

    Correct Answer: A

    Solution :

    [a] Let the number be x. Then, according to the question, \[x\times (25%\,\,x)=x(200%\,\,x)\] \[\Rightarrow \]   \[x\times \frac{x}{4}=3x\] \[\Rightarrow \]   \[{{x}^{2}}=12x\] \[\Rightarrow \]   \[x=12\]


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