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If a district has 3000 births, 1900 deaths, 400 in-migration and 1100 out-migration, what will be the total change?

Answer and explanation

Correct answer: Increase of 400

The direct answer is A: an increase of 400. Use the population-change relation step by step. First calculate natural increase: births − deaths = 3000 − 1900 = 1100. Next calculate net migration: in-migration − out-migration = 400 − 1100 = −700, meaning a net loss of 700 people through migration. Finally combine the two effects: 1100 + (−700) = +400. Therefore the district’s total population increases by 400. Option A is correct. B incorrectly counts only the natural increase and ignores migration. C adds the components without treating out-migration as a subtraction. D adds all four figures, but deaths and out-migration remove people and must not be added as gains. Memory cue: births and in-migration carry plus signs; deaths and out-migration carry minus signs. The answer is a change, not the district’s final population, because the starting population is not supplied.

Related tags

Population CalculationTotal ChangeNet MigrationProcesses Of Population ChangePopulationGeographyClass 9 Mcq

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