Question

Study the following pie chart carefully and answer the questions based on it.
The pie chart shows how the school fund is spent under different heads in a certain school. Using the pie chart answer the questions.
What will be the percentage expenses on library if the corresponding sectorial angle is increased by $50$%?

• A. $5$%
• B. $10$%
• C. $6\frac{2}{3}$%
• D. $25$%

Answer 1

The correct option is D $25$%

New sectorial angle made by library $\Rightarrow {60}^{\circ }+{30}^{\circ }={90}^{\circ }$
Percentage expense on library $\Rightarrow \frac{90}{360}\times 100\Rightarrow 25$%.