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8th Class Mathematics Comparing Quantities Question Bank Percentage, Profit and Loss

  • question_answer
    What is the percent of pure gold in 22-carat gold, if 24-carat gold is hundred percent pure gold?

    A)  \[90\frac{1}{3}%\]                   

    B)  \[91\frac{2}{3}%\]

    C)  \[94\frac{1}{3}%\]                   

    D)  \[95\frac{2}{3}%\]

    Correct Answer: B

    Solution :

    (b): \[24\,carrot\cong 100%\] \[1\text{ }carat\cong \frac{100%}{24}\] \[22\,carat\cong \frac{100%}{24}\times 22=\frac{100\times 11}{12}%=91\frac{2}{3}%.\]


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