Question

How many of the shape of the given figure must be shaded so that $\frac{2}{5}$ of the figure is unshaded?

• A. $5$
• B. $10$
• C. $15$
• D. $20$

Answer 1

The correct option is C $15$

Total number of shapes $=25$
Unshaded fraction $=\frac{2}{5}$
$\therefore$ Shaded fraction $=1-\frac{2}{5}=\frac{3}{5}$
Now, number of shape to be shaded $=\frac{3}{5}\times 25=15$.