• # 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) $90%$

(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.