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In a country, 30 percent of the population is aged 0-14, 60 percent is aged 15-59, and 10 percent is aged 60 and above. Approximately how many total dependents are there per 100 working-age persons?

Answer and explanation

Correct answer: 67

The dependency ratio compares dependent-age people with working-age people. Here, children aged 0–14 account for 30% and people above 60 account for 10%, so total dependents equal \(30 + 10 = 40\)% of the population. The working-age group is 60%. Therefore, dependents per 100 working-age persons are \(\frac{40}{60} \times 100 = 66.67\), or approximately 67.

Option A is correct because the ratio is not found by simply using the dependent percentage alone. The correct formula is \(Dependency\ ratio = \frac{Dependent\ population}{Working\text{-}age\ population} \times 100\). Thus 40 dependents for every 60 working-age persons correspond to about 67 dependents per 100 working-age persons. Options 40 and 50 ignore the required comparison, while 70 is only a less accurate approximation.

Related tags

Dependency RatioAge StructureWorking-Age PopulationDemographyPopulation CompositionGeographyClass 12 Mcq

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