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Question

The population of a town is 125000. It is increasing at the rate of 2% per annum. What will be its population after 3 years?

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Solution

Population of the town, P= 125000Rate of increase, R= 2%Time, n = 3 yearsThen the population of the town after 3 years is given byPopulation = P×1+R1003= 125000×1+21003= 125000×100+21003 = 125000×1021003 = 125000×51503= 125000 ×5150×5150×5150= 51×51×51 = 132651Therefore, the population of the town after three years is 132651.

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