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If a country's birth rate is 29 per thousand, death rate is 7 per thousand, and net migration rate is -9 per thousand, what is the total growth rate per thousand?

Answer and explanation

Correct answer: 13 per thousand

Total population growth combines natural increase and net migration. Natural increase is calculated as the birth rate minus the death rate. Net migration is then added, keeping its sign: a negative rate means that out-migration is greater than in-migration. Ignoring that negative contribution would overstate the final growth rate.

Natural increase is \(29-7=22\) per thousand. Adding net migration gives \(22+(-9)=13\) per thousand. Therefore, the total growth rate is 13 per thousand and option A is correct. The value 22 per thousand is only the natural increase; it is not the total because migration reduces the population by 9 per thousand.

Related tags

Birth Death MigrationTotal Growth RatePer ThousandPopulation ChangePopulation GrowthThe World Population – DistributionDensity And GrowthThe World Population Distribution Density And Growth

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