The survey for analyzing two trees Oak and Pine has been conducted and the results obtained are shown in a bar graph. What is the percentage increment in the number of Oak trees from the year 2005 to 2011?

5 %

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10 %

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12.5 %

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15 %

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Solution

The correct option is C
12.5 %

In 2005, number of Oak trees = 40

And in 2011, it is = 45.

Now, basically, percentage increment from A to B is $\frac{A - B}{A} \times 100$

$S o t h e p e r c e n t a g e i n c r e m e n t f r o m 2005 t o 2011 i s$

$\Rightarrow \frac{45 - 40}{40} \times 100 = \frac{1}{8} \times 100 = 12.5$ %

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