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If ages 0 to 14 form 32 percent and ages 15 to 59 form 58 percent of a country's population, what is the share aged 60 and above?

Answer and explanation

Correct answer: 10 percent

The age groups together represent the entire population, so their percentages must add to 100. The first group, ages 0 to 14, accounts for 32 percent. The second group, ages 15 to 59, accounts for 58 percent. These two groups together make up the non-elderly share: \(32+58=90\) percent. The remaining percentage must belong to people aged 60 and above.

Subtracting the known share from the whole population gives \(100-90=10\) percent. Therefore, the share aged 60 and above is 10 percent, so option B is correct. The calculation assumes the three stated groups are complete and non-overlapping, which they are because the age boundaries cover children, working-age people, and the elderly without a gap. An answer such as 8 percent would not complete the total to 100 percent.

Related tags

Age Group CalculationElderly SharePopulation CompositionPercentagesAge StructureGeographyClass 12 McqRdgdfgdfg

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