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If 12 percent of a region's population is aged 60 years and above and 60 percent is aged 15-59, what is the old-age dependency ratio?

Answer and explanation

Correct answer: 20

The old-age dependency ratio compares the elderly population with the working-age population and is calculated as \(\frac{\text{elderly population}}{\text{working-age population}}\times100\). Here, the elderly share is 12 percent and the working-age share is 60 percent. Substitution gives \(\frac{12}{60}\times100=20\).

Thus option A is correct. The ratio is not obtained by adding the two percentages, which would give 72, nor by dividing by the total population because the denominator is specifically the working-age group. A value of 20 means there are 20 older persons for every 100 people in the stated working-age group, under this definition.

Related tags

Old-Age DependencyElderly PopulationWorking AgeAge RatioAge StructurePopulation CompositionGeographyClass 12 Mcq

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