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A country has a birth rate of 11 per thousand and a death rate of 13 per thousand, yet its total growth rate is 0.4 percent. What is the approximate net migration rate?

Answer and explanation

Correct answer: 6 per thousand

Population change has two parts: natural increase, which is births minus deaths, and net migration. Birth and death rates are given per thousand, so the total growth rate of 0.4 percent must first be converted to per thousand: 0.4 percent equals 4 per thousand.

Natural increase is \(11 - 13 = -2\) per thousand, meaning deaths exceed births by 2 per thousand. The relation is total growth = natural increase + net migration. Hence \(4 = -2 +\) net migration, so net migration is 6 per thousand. Therefore, option C is correct; positive migration offsets the natural decrease.

Related tags

Net Migration CalculationNatural DecreaseTotal Growth RatePopulation EquationPopulation GrowthThe World Population – DistributionDensity And GrowthThe World Population Distribution Density And Growth

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