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If there are 2,200 births, 1,600 deaths, 700 in-migrants and 900 out-migrants, what will the total population change be?

Answer and explanation

Correct answer: Increase of 400

Answer: B, an increase of 400. Solve in two steps. First calculate natural increase: births minus deaths = 2,200 − 1,600 = 600. Next calculate net migration: in-migration minus out-migration = 700 − 900 = −200, meaning a migration loss of 200. Add the two components: total change = 600 + (−200) = 400. Therefore, the population increases by 400 people. A is only the magnitude of the migration loss and ignores natural increase. C is only the natural increase and ignores out-migration. D incorrectly adds all figures, including deaths and out-migration, instead of subtracting them. Memory cue: subtract deaths and out-migration; add births and in-migration.

Related tags

Population CalculationNatural IncreaseNet MigrationProcesses Of Population ChangePopulationGeographyClass 9 Mcq

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