The population of a town increases at a rate of 12 percent per annum. If the population of the town was 7,500 at the end of 2018, what will be its population at the end of 2021?

Using the compound interest formula for population growth, the final population equals the initial population multiplied by (1 + r/100)^n. Here, the initial population is 7500, the rate r is 12, and the time period n is 3 years. This yields 7500 * (1.12)^3, which is 7500 * 1.404928, equaling 10536.96. The result is 10537.

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