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A country has a population of 5 million and an annual growth rate of 2 percent. Approximately how many people will be added in one year if the rate is applied simply?

Answer and explanation

Correct answer: 100000

A growth rate of 2 percent means that two out of every hundred people in the initial population are added during the year, under the simple calculation requested. The population is 5 million, or 5,000,000. The increase is \(5000000\times(2/100)=100000\) people. Thus approximately 100,000 people will be added in one year.

Option B is correct. The answer is an increase, not the total population after one year; the total would be about 5.1 million under this simplified calculation. 50,000 represents only 1 percent of 5 million, while 200,000 represents 4 percent. The wording says to apply the rate simply, so there is no need to consider compounding, changing rates, migration separately, or exact demographic fluctuations.

Related tags

Growth Rate CalculationAnnual Population GrowthPercentage IncreasePopulation BasePopulation GrowthThe World Population – DistributionDensity And GrowthThe World Population Distribution Density And Growth

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