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If total growth is -0.5 percent and natural increase is +0.9 percent, what is the net migration rate?

Answer and explanation

Correct answer: -1.4 percent

The relationship between the components is total growth = natural increase + net migration. To find net migration, rearrange it as net migration = total growth − natural increase. Keeping the signs is essential because a positive natural increase may be offset by negative migration.

Substituting the values gives \(-0.5-0.9=-1.4\) percent. Thus the net migration rate is negative 1.4 percent, meaning out-migration exceeds immigration by that amount relative to the population. Option A is correct. The negative total growth occurs because this outward migration is larger than the positive natural increase of 0.9 percent. Adding the magnitudes would produce an incorrect result.

Related tags

Net Out MigrationTotal DeclineNatural IncreasePopulation CalculationPopulation GrowthThe World Population – DistributionDensity And GrowthThe World Population Distribution Density And Growth

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