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A region records 7200 births, 5100 deaths, 1600 in-migrants, and 2200 out-migrants. What is the total population change?

Answer and explanation

Correct answer: Increase of 1500

Total population change has two main components: natural change and net migration. Natural change equals births minus deaths. Net migration equals in-migrants minus out-migrants. The overall change is the sum of these two components, so people entering and leaving must both be included rather than using births and deaths alone.

Natural increase is \(7200-5100=2100\). Net migration is \(1600-2200=-600\), because 600 more people leave than enter. The total change is therefore \(2100+(-600)=1500\), an increase of 1500 people. Hence option A is correct. The value 2100 ignores the population loss through migration.

Related tags

Total Population ChangeNatural IncreaseNet MigrationPopulation ArithmeticPopulation GrowthThe World Population – DistributionDensity And GrowthThe World Population Distribution Density And Growth

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