The population in a small town increases from $20000$ to $21250$ in one year. Find the percentage increase in population.

6.25

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5.20

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6.98

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2.75

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Solution

The correct option is B $6.25$
Increase in population $= 21250 - 20000 = 1250$ .
Therefore, percentage increase in population $= \frac{I n c r e a s e i n p o p u l a t i o n}{L a s t y e a r p o p u l a t i o n} \times 100 %$
$= \frac{1250}{20000} \times 100 %$
$= \frac{125000}{20000} %$
$= \frac{25}{4} %$
$= 6.25 %$
Therefore, percentage increase in population is $6.25 %$ .

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