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A country's population rises from 12 million to 14.7 million. What is the total percentage growth?

Answer and explanation

Correct answer: 22.5 percent

Percentage growth must be calculated relative to the original population, not the final population. The population rises from 12 million to 14.7 million, so the absolute increase is 14.7 minus 12, which equals 2.7 million. This increase is then compared with the starting value of 12 million.

Using the percentage formula, growth is \(\frac{2.7}{12}\times100=22.5\%\). Equivalently, the final population is 122.5 percent of the original, so the increase is 22.5 percent. Thus option C is correct. A value such as 20 percent would underestimate the increase because it does not represent the actual difference between the two populations relative to the starting population.

Related tags

Percentage GrowthPopulation CalculationAbsolute IncreaseRelative ChangePopulation GrowthThe World Population – DistributionDensity And GrowthThe World Population Distribution Density And Growth

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