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Question

The population of a town is $$20, 000$$. If the annual birth rate of is $$4\%$$ and annual death rate is $$2\%$$ calculate the population after two years. 


Solution

Annual birth rate is $$4\%$$
Annual death rate is $$2\%$$
Net $$=+2\%$$
Population after $$2$$ years $$=(1+0.02)^2 \times  20000=20808$$

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