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If the elderly population and working-age population grow at the same proportional rate, why may elderly dependency remain stable?

Answer and explanation

Correct answer: Because the numerator and denominator of the ratio grow at the same rate

Elderly dependency is commonly expressed as the number of older people compared with the working-age population. In ratio form, it can be written as elderly population divided by working-age population, often multiplied by 100. If both the numerator and denominator increase by the same proportion, their relative relationship does not change, so the dependency ratio can remain stable.

For example, suppose there are 20 elderly people and 100 working-age people; the ratio is 20 per 100. If both rise by 10 percent, they become 22 and 110, and the ratio remains \(22/110=0.20\), or 20 per 100. Thus, option A is correct. This does not mean the elderly are excluded or workers are irrelevant; both are essential to the ratio.

Related tags

Elderly DependencyRatio ConceptWorking Age PopulationAge StructurePopulation CompositionGeographyClass 12 McqRdgdfgdfg

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