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The population of a town increases at th...

The population of a town increases at the rate of 50 per thousand. Its population after 2 years will be 22050. Find its present population.

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Population after 2 years = 22050
Rate of increase = 50 per thousand
Period (n) = 2 years
Let present population = P, then `A= P(1+R/100)^n`
`22050=P(1+50/100)^2`
`P=20000`
Present population is `20000`.
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