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A country has a population of 8 million and an annual growth rate of 1.75 percent. Approximately how many people will be added in one year by simple calculation?

Answer and explanation

Correct answer: 140000

The annual growth rate of 1.75 percent means that 1.75 out of every 100 people are added in one year, under the stated simple calculation. For a population of 8,000,000, calculate \(8000000\times\frac{1.75}{100}\). Since \(1.75\% = 0.0175\), the result is \(8000000\times0.0175=140000\).

Therefore, option B is correct: approximately 140,000 people are added in one year. This is a simple estimate and does not include complications such as changing rates, timing during the year, or compounding. The answer 175,000 would correspond to applying an incorrect percentage or arithmetic operation. The units are people, because the population number is multiplied by a dimensionless rate.

Related tags

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

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