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If children form 28 percent and elderly people form 12 percent of a country's population, what is the working-age share?

Answer and explanation

Correct answer: 60 percent

The three broad age groups together make up the whole population, or 100 percent. Children account for 28 percent and elderly people account for 12 percent. Their combined share is therefore \(28+12=40\) percent. The remaining population belongs to the working-age group, so its share is \(100-40=60\) percent. This calculation assumes that the three categories are mutually exclusive and together cover the entire population, as is usual in an age-structure question.

Choice C, 60 percent, is correct. Choice A, 40 percent, is the combined share of children and elderly people, so it represents the dependent groups rather than the working-age group. Choice B does not follow from the given percentages, and choice D, 72 percent, is simply 100 minus the child share and incorrectly ignores the elderly group. Subtracting both non-working-age shares is the essential step.

Related tags

Working Age CalculationDependent PopulationAge StructurePopulation PercentagePopulation CompositionGeographyClass 12 McqRdgdfgdfg

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