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If elderly people form 21 percent and children 19 percent of a country's population, what is the working-age share?

Answer and explanation

Correct answer: 60 percent

The three stated age categories together make up the whole population. Children account for 19 percent and elderly people account for 21 percent. These are the two groups outside the specified working-age category, so their combined share is \(19+21=40\) percent. The working-age share is the part left after removing these groups from 100 percent.

The calculation is \(100-40=60\) percent. Therefore, 60 percent of the population belongs to the working-age group, making option C correct. The 79 percent choice would result from subtracting only the elderly share from 100 and ignoring children; it therefore cannot represent the working-age share when children are also included. The result also checks because \(19+60+21=100\) percent.

Related tags

Working Age ShareAge CalculationChild ElderlyPopulation CompositionAge StructureGeographyClass 12 McqRdgdfgdfg

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