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A country's population rises from 37.5 million to 46.5 million. What is the total percentage growth?

Answer and explanation

Correct answer: 24 percent

Percentage growth compares the increase with the original population, not with the final population. The population rises from 37.5 million to 46.5 million, so the increase is 9 million. The base for calculating growth is therefore 37.5 million, because that was the population before the change.

Using the formula, percentage growth is \(\frac{\text{increase}}{\text{original population}}\times100\). Thus, \(\frac{9}{37.5}\times100=24\) percent. Therefore, option C, 24 percent, is correct. A calculation using 46.5 million as the base would give a different figure, but that would not represent growth from the original population.

Related tags

Percentage GrowthInitial PopulationAbsolute IncreasePopulation MathsPopulation GrowthThe World Population – DistributionDensity And GrowthThe World Population Distribution Density And Growth

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