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A country has a population of 24 million and a natural increase rate of 18 per thousand. With zero migration, what is the natural increase in one year?

Answer and explanation

Correct answer: 432000

A natural increase rate of 18 per thousand means that 18 people are added naturally for every 1,000 people in the population during one year. The country has 24 million people, so the increase is \(24,000,000\times18/1,000=432,000\). Since migration is zero, this natural increase is also the total population increase for that year. Therefore option C is correct.

The calculation can be simplified because dividing 24,000,000 by 1,000 gives 24,000, and multiplying by 18 gives 432,000. The unit “per thousand” must be converted to the fraction 18/1,000, not 18/100. That distinction prevents a result one hundred times too large. Thus the annual natural increase is 432,000 people.

Related tags

Natural Increase CalculationPer Thousand RatePopulation BaseDemographyPopulation GrowthThe World Population – DistributionDensity And GrowthThe World Population Distribution Density And Growth

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