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If births are 700, deaths are 900, in-migration is 500 and out-migration is 100, what will be the total change?

Answer and explanation

Correct answer: 200

The direct answer is C: the total change is 200. Use the complete formula: total change = births − deaths + in-migration − out-migration. First calculate natural change: 700 − 900 = −200, because deaths are 200 more than births. Next calculate net migration: 500 − 100 = +400, because 400 more people enter than leave. Finally combine them: −200 + 400 = +200. Therefore, the population increases by 200, not decreases. A is wrong because it uses only the negative natural change and ignores migration. B is wrong because the positive net migration does not merely cancel the natural decrease; it is 400, while the decrease is 200, leaving +200. C is correct. D is wrong because it adds the figures incorrectly and does not follow the population-change formula. Memory cue: write two balances separately—births minus deaths, then in-migration minus out-migration—before adding them.

Related tags

Total ChangeNumerical ProblemNet MigrationProcesses Of Population ChangePopulationGeographyClass 9 Mcq

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