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If a country's child dependency ratio is 45 and elderly dependency ratio is 25, what is the total dependency ratio?

Answer and explanation

Correct answer: 70

The child dependency ratio and elderly dependency ratio are two parts of the total dependency ratio. Both are normally expressed as dependents per 100 working-age people. Since they use the same working-age denominator, their values can be added directly to obtain the total ratio. No subtraction or averaging is needed.

The child component is 45 and the elderly component is 25. Therefore, total dependency is \(45+25=70\) dependents per 100 working-age persons. Option C is correct. The value 45 describes only child dependency, while 25 would describe only elderly dependency; neither includes both groups. The result does not mean that 70 percent of the entire population is dependent, because a ratio and a population percentage are different measures.

Related tags

Child DependencyElderly DependencyTotal DependencyRatio CalculationAge StructurePopulation CompositionGeographyClass 12 Mcq

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