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
623%
D
25%

Solution

## The correct option is D $$25$$%New sectorial angle made by library $$\Rightarrow 60^{\circ} + 30^{\circ} = 90^{\circ}$$Percentage expense on library $$\Rightarrow \dfrac {90}{360}\times 100\Rightarrow 25$$%.Maths

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