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A country's population increases from 40 million to 44 million. What is the percentage population growth during this period?

Answer and explanation

Correct answer: 10 percent

Percentage population growth compares the increase with the starting population, not with the final population. The population rises from 40 million to 44 million, so the absolute increase is 4 million. Dividing this increase by the initial 40 million and multiplying by 100 gives 10 percent. Therefore, the correct choice is B.

Use \(\text{percentage growth}=\frac{\text{increase}}{\text{initial population}}\times100\). The calculation is \(\frac{44-40}{40}\times100=\frac{4}{40}\times100=10\%\). In crore units, the same calculation is \(\frac{0.4}{4}\times100=10\%\). Choice A understates the increase, while 40 percent incorrectly treats the original population as the increase.

Related tags

Percentage Population GrowthAbsolute GrowthPopulation CalculationGrowth RatePopulation GrowthThe World Population – DistributionDensity And GrowthThe World Population Distribution Density And Growth

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