Examkin

Question

Difficulty: HardPopulation Concepts and Growth Dynamics

In a semi-urban local government area in Kano State, Nigeria, the total age dependency ratio is recorded as 80%80\%. If the population of children (aged 0−140-14 years) is 9000090{}000 and the population of elderly persons (aged 6565 years and above) is 1800018{}000, what is the total number of economically active individuals (aged 15−6415-64 years) in this local government area?

Answer: 135000 people

Answer

The total number of economically active individuals (aged 15–64 years) is 135000135{}000.
The total age dependency ratio is defined as the ratio of dependents (people aged 0−140-14 and 65+65+) to the working-age population (aged 15−6415-64), multiplied by 100100. Summing the youth (9000090{}000) and elderly (1800018{}000) yields 108000108{}000 total dependents. Dividing 108000108{}000 by the dependency ratio (0.800.80) gives exactly 135000135{}000 economically active individuals.

Step-by-Step Solution

1
Calculate the total dependent population
108000108{}000 dependents
The dependent population consists of youth under 15 years (9000090{}000) and elderly individuals aged 65 years and over (1800018{}000).
2
Set up the age dependency ratio equation
80=108000Pop15−64×10080 = \frac{108{}000}{\text{Pop}_{15-64}} \times 100
The dependency ratio measures the relationship between the dependent cohort and the working-age cohort (15−6415-64 years).
3
Rearrange the equation to solve for the working-age population
Pop15−64=108000×10080=135000\text{Pop}_{15-64} = \frac{108{}000 \times 100}{80} = 135{}000
Dividing the total dependent population by the dependency ratio expressed as a decimal (0.800.80) yields the total economically active population.

Key Concept

Age Dependency Ratio and Cohort Analysis
Estimated Time:2m 0s
Rate this question

Topics

Population Concepts and Growth Dynamics

More questions from this topic