The population of a town $2$ years ago was $2500$ . Due to migration to cities, it decreases every year at the rate $4 %$ per annum. Find its present population.

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Solution

Present population $= 2500 {(1 - \frac{4}{100})}^{2}$
$= 2500 \frac{96}{100} \times \frac{96}{100}$
$= 2304$ Ans

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