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A country has a population of 90 million and an annual growth rate of 1.35 percent. Approximately how much will it grow in one year by simple calculation?

Answer and explanation

Correct answer: 1215000

An annual growth rate is a percentage of the starting population, not a fixed number of people. To calculate the one-year increase, convert 1.35 percent to the decimal \(1.35/100=0.0135\), then multiply it by the population of 90 million. This gives a simple estimated increase for one year.

The calculation is \(90000000\times0.0135=1215000\). Therefore, the population grows by approximately 1,215,000 people, so option C is correct. The word “approximately” reflects the simple percentage calculation and does not require a more complex compounding model for this one-year estimate. Treating 1.35 as a number of people, rather than a percentage, would be incorrect.

Related tags

Annual Growth RatePopulation BasePercentage CalculationAbsolute GrowthPopulation GrowthThe World Population – DistributionDensity And GrowthThe World Population Distribution Density And Growth

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