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A country's population increases from 6 million to 6.6 million. What is the percentage population growth over this period?

Answer and explanation

Correct answer: 10 percent

To find percentage population growth, first calculate the numerical increase and then compare it with the initial population. The population rises from 6 million to 6.6 million, so the increase is \(6.6-6=0.6\) million, or 600,000 people. Percentage growth is calculated using the initial population as the base: \((0.6/6)\times100=10\) percent.

Therefore, option C, 10 percent, is correct. The denominator must be the starting population, not the final population. The increase of 0.6 million is one-tenth of 6 million, which provides a quick check of the result. Six percent would understate the increase, while 8 or 11 percent do not follow from the stated change. This is total growth over the period, not necessarily an annual rate.

Related tags

Percentage GrowthPopulation CalculationAbsolute IncreasePopulation GrowthThe World Population – DistributionDensity And GrowthThe World Population Distribution Density And GrowthGeography

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