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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 $$50$$%?
901921_3345ca1afd6a49ccb5d178aab9cbeae5.png


A
5%
loader
B
10%
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C
623%
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D
25%
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Solution

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

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