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If children form 24 percent and the child dependency ratio is 40, what is the working-age share?

Answer and explanation

Correct answer: 60 percent

The child dependency ratio places the child population in the numerator and the working-age population in the denominator. A ratio of 40 means that the child share is 40 per 100 units of working-age share. Let the working-age share be \(W\), and use the given child share of 24 percent.

The equation is \(\frac{24}{W}\times100=40\). Thus \(24\times100=40W\), giving \(W=2400/40=60\) percent. Therefore, option B is correct. Checking the result, \(\frac{24}{60}\times100=40\). Choosing 80 percent would give only \(\frac{24}{80}\times100=30\), so it cannot satisfy the stated dependency ratio.

Related tags

Child Dependency RatioWorking Age ShareRatio CalculationAge StructurePopulation CompositionGeographyClass 12 McqRdgdfgdfg

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