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If 65 percent of a country's population is of working age and the total dependency ratio is 53.85, what is the approximate dependent share of the total population?

Answer and explanation

Correct answer: 35 percent

The dependency ratio compares the dependent population with the working-age population, usually as a percentage: \(\mathrm{Dependency\ ratio}=\frac{D}{W}\times100\). Here the working-age share is 65 percent of the total population, and the ratio is 53.85. Let the dependent share be \(x\) percent. Then \(\frac{x}{65}\times100=53.85\). Rearranging gives \(x=\frac{53.85\times65}{100}=35.0025\), approximately 35 percent.

Therefore, option B is correct. Option D confuses the dependency ratio with the dependent share of the total population. The ratio uses working-age people as its denominator, whereas the requested percentage uses the entire population as its denominator. The small decimal difference is due to rounding in the given ratio. The supplied answer and method are mathematically consistent.

Related tags

Dependency RatioDependent ShareWorking-Age PopulationReverse CalculationAge StructurePopulation CompositionGeographyClass 12 Mcq

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