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If 400 people enter a region and 650 leave it, what is the net migration?

Answer and explanation

Correct answer: Decrease of 250

Answer: B, a decrease of 250 people. Net migration = in-migration - out-migration. Here, 400 people enter and 650 leave, so net migration = 400 - 650 = -250. The negative sign means that departures exceed arrivals and the region loses 250 people through migration. A reverses the direction of the balance. C adds the two flows, 400 + 650 = 1050, but that is total movement, not net migration. D uses an incorrect subtraction. The word ‘net’ means the balance after one flow is compared with the other. Memory cue: arrivals are positive and departures are subtracted; a negative answer means population loss through migration.

Related tags

Net MigrationMigration BalancePopulation LossIn-MigrationPopulation GrowthThe World Population – DistributionDensity And GrowthThe World Population Distribution Density And GrowthGeography

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