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If the working-age population is 72 percent and the elderly group only 6 percent, what is the child share?

Answer and explanation

Correct answer: 22 percent

The correct answer is C: 22 percent. The three broad age groups together represent the whole population, or 100 percent. The working-age group is 72 percent and the elderly group is 6 percent. First add the known shares: 72 + 6 = 78 percent. The remaining share must belong to children, so child share = 100 − 78 = 22 percent. Option C is therefore correct. Option A would make the three groups total only 90 percent, leaving 10 percent unexplained. Option B would make the total 96 percent, also incomplete. Option D would make the total 106 percent, which is impossible if the groups are mutually exclusive and cover the whole population. The important idea is the whole-part relationship: when all categories together equal 100 percent, an unknown category is found by subtracting the known categories from 100. This question concerns age composition, especially the distribution among children, working-age people, and elderly people.

Related tags

Age CompositionChild ShareWorking-Age PopulationElderly PopulationPopulation CompositionAge StructureGeographyClass 12 Mcq

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