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7th Class Mathematics Comparing Quantities Question Bank Comparing Quantities

  • question_answer
    In a school 720 are boys and 40% are girls, then the number of girls is

    A) 480                 

    B) 460

    C) 490                             

    D) 475

    Correct Answer: A

    Solution :

        % of boys\[=\left( 10-40 \right)=60%\] Let total number of students be\[x\] 60% of\[x=720\] \[\frac{60}{100}\times x=720\] \[x=\frac{720\times 100}{60}=1200\] Number of girls\[=\frac{40}{100}\times 1200=480\]           


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