7th Class Mathematics Comparing Quantities Question Bank Comparing Quantities

  • question_answer What percent of the given figure is shaded?

    A) \[90\frac{1}{2}%\]                    

    B) \[87\frac{1}{4}%\]

    C) \[87\frac{1}{2}%\]         

    D) \[90%\]

    Correct Answer: C

    Solution :

    (c) Out of 8 parts, seven is shaded \[\Rightarrow \]\[\frac{7}{8}\times 100%=87\frac{1}{2}%\] Mind of a mathematician: Mathematical Ingenuity: \[1=100%\] \[{}^{1}/{}_{8}=12\frac{1}{2}%\] \[\therefore \]\[{}^{7}/{}_{8}=1-\frac{1}{8}=87\frac{1}{2}%\] This calculation should happen automatically to a thoughtful student.           


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