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A country's population rises from 40 million to 50 million over 20 years. How should this change be expressed as absolute population growth?

Answer and explanation

Correct answer: 10 million

The correct answer is B. Absolute population growth is the actual numerical increase between the final and initial populations. Here the calculation is \(50\text{ million}-40\text{ million}=10\text{ million}\). Ten million is equal to 1 crore in the Indian numbering system, so the country experienced an absolute increase of 1 crore over the twenty-year period.

This measure describes the number of additional people, not the final population and not the percentage or rate of growth. Option D gives the final population, 5 crore, while C gives the initial population, 4 crore. Option A, 50 lakh, is only 5 million and is half of the actual increase. Therefore option B correctly expresses absolute population growth. The time period matters for calculating a rate, but not for finding this simple absolute difference.

Related tags

Absolute Population GrowthPopulation ChangeNumerical IncreaseDemography CalculationPopulation GrowthThe World Population – DistributionDensity And GrowthThe World Population Distribution Density And Growth

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