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A region has an absolute population increase of 500000 but its initial population is unknown. Which quantity cannot be calculated directly?

Answer and explanation

Correct answer: Percentage growth rate

Absolute growth is the direct numerical difference between final and initial population. Since the question already gives an increase of 500,000, absolute growth is known. Its positive sign also shows that the population increased, so the direction of change is known as well. However, percentage growth is a relative measure.

To calculate percentage growth, we need \(\frac{\text{absolute growth}}{\text{initial population}}\times100\). The initial population is not supplied, so the denominator is unknown and the percentage cannot be calculated directly. Therefore, option C is correct. Different initial populations could produce very different percentages from the same increase of 500,000, which is why the missing starting value matters.

Related tags

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

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