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If a country's natural increase rate is +9 per thousand and total growth rate is +3 per thousand, what is the net migration rate?

Answer and explanation

Correct answer: -6 per thousand

Total population growth rate is the sum of natural increase and net migration rate. Rearranging the relationship gives net migration rate = total growth rate − natural increase rate. The values are +3 per thousand for total growth and +9 per thousand for natural increase.

Therefore, net migration rate = \(3 - 9 = -6\) per thousand, so option B is correct. The negative sign is important: it means the country loses more people through outward migration than it gains through inward migration. Natural increase is still positive, but the larger negative migration balance reduces total growth from +9 to +3 per thousand.

Related tags

Net Migration RateNatural IncreaseTotal GrowthOut MigrationPopulation GrowthThe World Population – DistributionDensity And GrowthThe World Population Distribution Density And Growth

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