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If births are 300, deaths are 500, in-migration is 400, and out-migration is 100, what will be the total change?

Answer and explanation

Correct answer: 100

The correct answer is A: 100. To find total population change, combine natural change and net migration. Natural change is births minus deaths: 300 − 500 = −200. Net migration is in-migration minus out-migration: 400 − 100 = +300. Now add the two results: −200 + 300 = +100. The plus sign means that the population increases by 100 people during the stated period. Option A is correct. Option B is wrong because it represents only the size of the natural decrease, not the final total change. Option C is wrong because it uses the net migration alone and ignores the 200-person natural decrease. Option D is wrong because it does not correctly combine the four figures and treats the values as if they should simply be added without subtracting deaths and out-migration. A useful general formula is: total change = births − deaths + in-migration − out-migration. Memory cue: additions are births and arrivals; removals are deaths and departures.

Related tags

Total ChangeNumerical ProblemNegative Natural IncreaseProcesses Of Population ChangePopulationGeographyClass 9 Mcq

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