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If there are 1500 births and 1000 deaths, but net out-migration is 600, what is the total population change?

Answer and explanation

Correct answer: Decrease of 100

Total population change includes both natural increase and migration. Natural increase is births minus deaths: \(1500-1000=500\). Net out-migration of 600 means 600 more people leave than enter, so migration contributes \(-600\) to the population change. Combining the two components gives \(500-600=-100\).

The negative sign means the population decreases rather than increases. Therefore, the total population change is a decrease of 100, so option A is correct. A decrease of 1100 would incorrectly add the deaths and the out-migrants without accounting for births. A natural increase of 500 ignores migration, while an increase of 100 reverses the effect of net out-migration. The supplied calculation is accurate.

Related tags

Birth Death MigrationTotal Population DeclineOut MigrationNatural IncreasePopulation GrowthThe World Population – DistributionDensity And GrowthThe World Population Distribution Density And Growth

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