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If natural increase is +11 per thousand and total growth is +2 per thousand, what is the net migration rate?

Answer and explanation

Correct answer: -9 per thousand

Natural increase and total growth are related but not identical. Total growth includes natural increase plus net migration. Therefore, net migration can be found by subtracting natural increase from total growth. A negative answer means that more people are leaving than entering, and it can reduce a positive natural increase.

Using the rates, net migration is \(2-11=-9\) per thousand. Thus the country has a negative net migration rate of 9 per thousand, so option B is correct. The calculation also checks because \(11+(-9)=2\). A positive value such as +9 would increase total growth to 20 per thousand and would not match the stated total.

Related tags

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

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