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If children form 30 percent, elderly people 20 percent, and the working-age population 50 percent of a country, how many total dependents are there per 100 working-age persons?

Answer and explanation

Correct answer: 100

Total dependents include both children and elderly people. The dependency ratio is not simply the dependent percentage; it measures dependents in relation to working-age people. For every 100 people in the whole population, 30 are children, 20 are elderly, and 50 are working age. Thus the dependent group and the working-age group have equal sizes.

The dependent share is \(30+20=50\) percent, while the working-age share is 50 percent. The ratio is therefore \(50/50\times100=100\). This means that for every 100 working-age persons, there are 100 dependents. Hence option C is correct. Option A counts only the dependent percentage and does not express it per 100 working-age persons.

Related tags

Dependency RatioTotal DependentsWorking Age PopulationAge StructurePopulation CompositionGeographyClass 12 McqRdgdfgdfg

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