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If 500 people enter and 920 people leave, what will net migration be?

Answer and explanation

Correct answer: Negative 420

The direct answer is B: negative 420. Net migration is calculated by subtracting the number of people leaving from the number entering: net migration = in-migration − out-migration. Here, the number entering is 500 and the number leaving is 920. Write the calculation as 500 − 920 = −420. The minus sign is important: it tells us that more people left than entered. Option A, positive 420, has the correct numerical difference but the wrong direction and sign. Option B is correct because the result is −420. Option C, positive 1,420, comes from adding the two numbers, but net migration is not found by adding entrants and leavers. Option D, zero, would be correct only if exactly equal numbers entered and left. Memory cue: compare “in” with “out”; if out is larger, net migration is negative.

Related tags

Net MigrationIn-MigrationOut-MigrationProcesses Of Population ChangePopulationGeographyClass 9 Mcq

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