Subject

    Quantitative Aptitude

    Topic

    Percentage

    A number X is mistakenly divided by 10 instead of being multiplied by 10. What is the percentage error in the result?

    ক)
    +99%
    খ)
    -100%
    গ)
    +100%
    ঘ)
    -99%

    Explanation

    By mistake = x/10 Actual value = x * 10 % Change = 10x−x1010x×100  =  99100×100\frac{10x-{\displaystyle\frac x{10}}}{10x}\times100\;=\;\frac{99}{100}\times100 = 99% (negative) Since actual value is greater than the wrong value.

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