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If the birth rate is 28 per thousand and the death rate is 8 per thousand, what is the natural increase rate per thousand?

Answer and explanation

Correct answer: 20 per thousand

Natural increase per thousand is found by subtracting the death rate from the birth rate. This measures the change caused by births and deaths before considering migration. Here the birth rate is 28 per thousand and the death rate is 8 per thousand, so the difference is \(28-8=20\) per thousand.

Therefore option B is correct. A rate of 20 per thousand means that, without migration and under the stated rates, the population would gain about 20 people for every 1,000 people through natural increase during the relevant period. It is not 36 because the rates are subtracted, not added, and it is not 28 because deaths must be considered.

Related tags

Birth RateDeath RateNatural Increase RatePer ThousandPopulation GrowthThe World Population – DistributionDensity And GrowthThe World Population Distribution Density And Growth

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