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Difficulty: EasyPopulation Concepts and Growth Dynamics

In a baseline demographic survey of an agricultural district in West Africa, 35%35\% of the population is under 15 years of age, 60%60\% is between 15 and 64 years of age, and 5%5\% is 65 years of age or older. What is the total dependency ratio of this district?

  1. A
    40.0%40.0\%
  2. B
    58.3%58.3\%
  3. 66.7%66.7\%Answer
  4. D
    150.0%150.0\%

Answer

The total dependency ratio of the district is 66.7%66.7\%.
To calculate the total dependency ratio, sum the young dependents (35%35\%) and elderly dependents (5%5\%) to get a total dependent population of 40%40\%. Divide this sum by the working-age population (60%60\%) and multiply by 100 to get 66.7%66.7\%.

Step-by-Step Solution

1
Determine the total percentage of dependents in the population.
Dependent Population = 35% (under 15)+5% (65 and older)=40%35\% \text{ (under 15)} + 5\% \text{ (65 and older)} = 40\%.
The dependent population consists of children under 15 years and elderly adults 65 years and older.
2
Identify the economically active (working-age) population percentage.
Working-Age Population = 60%60\%.
The economically active cohort comprises individuals aged 15 to 64 years.
3
Apply the total dependency ratio formula.
Dependency Ratio=Dependent PopulationWorking-Age Population×100=4060×100=66.7%\text{Dependency Ratio} = \frac{\text{Dependent Population}}{\text{Working-Age Population}} \times 100 = \frac{40}{60} \times 100 = 66.7\%
The ratio measures the economic burden borne by the working-age population to support non-working dependents.

Key Concept

Total Dependency Ratio Calculation
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Topics

Population Concepts and Growth Dynamics

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