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In a country, the child share falls from 35 percent to 22 percent and the elderly share rises from 8 percent to 13 percent. If the remainder is working age, by how much did the working-age percentage change?

Answer and explanation

Correct answer: An increase of 8 percentage points

The governing concept is the complement of population shares and the distinction between percentage points and percentage change. Initially, the working-age share was 100 − 35 − 8 = 57 percent. In the later period, it was 100 − 22 − 13 = 65 percent. The change is therefore 65 − 57 = 8 percentage points, so option A is correct. Option C incorrectly treats the entire 13-point fall in the child share as an equal rise in the working-age share, ignoring that the elderly share increased by 5 points. Option B has the wrong direction and value, while option D ignores the changed composition. The answer is expressed in percentage points because two population shares are being subtracted directly.

Related tags

Percentage PointsWorking Age ShareAge Structure CalculationPopulation CompositionAge StructureGeographyClass 12 Mcq

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