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If a country's total growth rate is 1.8 percent and its natural increase rate is 2.3 percent, what is the net migration rate?

Answer and explanation

Correct answer: -0.5 percent

Total population growth combines two components: natural increase and net migration. Natural increase comes from births minus deaths, while net migration is the balance between people entering and leaving. Thus, if two of these quantities are known, the third can be found by subtraction.

Use \(\text{Total Growth}=\text{Natural Increase}+\text{Net Migration}\). Hence, \(\text{Net Migration}=1.8-2.3=-0.5\) percent. The negative sign means that out-migration is greater than in-migration by 0.5 percentage point. It does not mean that the total growth is negative; the country can still grow naturally. Therefore, option B is correct.

Related tags

Net Migration RateTotal GrowthNatural IncreaseDemographic CalculationPopulation GrowthThe World Population – DistributionDensity And GrowthThe World Population Distribution Density And Growth

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