# The annual rate o

Let 3 years ago population = P

Present population = 33275

Time, n = 3 years

Increases rate, R = 10% per annum

Now,

Amount (A) = P (1 + R/100)n [Where, A = Amount with compound interest

P = Present value

R = Annual interest rate

n = Time in years]

Population = P (1 + R/100)n

33275 = P (1 + 10/100)3

33275 = P (1 + 1/10)3

33275 = P (11/10)3

33275 = P × 1331/1000

P = 33275 × 1000/1331

P = 25 × 1000

P = 25000

3 years ago population is 25000.

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