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A region has an age structure of 20 percent aged 0-14, 65 percent aged 15-59, and 15 percent aged 60 and above. What is the approximate total dependency ratio?

Answer and explanation

Correct answer: 53.8

The total dependency ratio compares dependants with the working-age population. Here, children and older persons together make up \(20+15=35\) percent, while the working-age group is 65 percent. The ratio is therefore \(35/65\times100\approx53.8\). It is expressed as about 53.8 dependants per 100 working-age persons, not simply as the 35 percent share of dependants.

Thus option A is correct. A common mistake is to choose 35.0 by reporting only the combined dependant percentage, but a dependency ratio requires division by the working-age population. Option C is the working-age share itself, not the ratio. Option D would result from a different denominator or calculation and is not supported by the given age structure. The percentages sum to 100, so the calculation is internally consistent.

Related tags

Total Dependency RatioAge CompositionWorking PopulationDemographic CalculationAge StructurePopulation CompositionGeographyClass 12 Mcq

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