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A region has a population of 1.5 million and gains 30000 people in one year. What is the simple annual growth rate?

Answer and explanation

Correct answer: 2 percent

The simple annual growth rate compares the number added during the year with the population at the beginning of that year. The formula is \(\frac{\text{increase}}{\text{initial population}}\times100\). Substituting the values gives \(\frac{30000}{1500000}\times100=2\%\). The unit descriptions, 30,000 and 1.5 million, are compatible because both are numbers of people.

Thus option C is correct. The answer is not 1 percent or 1.5 percent because those do not result from the required ratio. It is not 3 percent because the increase is only two out of every hundred people in the starting population. This is a simple rate and does not require compounding.

Related tags

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

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