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If a country's total dependency ratio is 40 and the working-age share is approximately 71.4 percent, what is the dependent share?

Answer and explanation

Correct answer: 28.6 percent

The total dependency ratio of 40 means that dependents equal 40 percent of the working-age population. The working-age share is about 71.4 percent. Let the dependent share be \(D\). Then \(\frac{D}{71.4}\times100=40\), so \(D=71.4\times0.40=28.56\) percent.

Rounded to one decimal place, the dependent share is 28.6 percent, making option B correct. The result is consistent with the population split because \(71.4+28.6=100\) percent. Option C, 40 percent, incorrectly copies the dependency ratio as though it were a share of the total population. The ratio and the population share use different denominators, which is why they are not numerically identical.

Related tags

Dependency RatioDependent PercentageWorking Age ShareRatio ConversionAge StructurePopulation CompositionGeographyClass 12 Mcq

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