In a country, the population under 15 years is 30%, the population aged 15-64 years is 60%, and the population over 65 years is 10%. The dependency ratio is:
- A 50
- B 66.7 ✓
- C 75
- D 80
Correct answer: B. 66.7
Explanation
The dependency ratio is calculated as (Population under 15 + Population over 65) / Population 15-64 × 100. Here, (30 + 10) / 60 × 100 = 40/60 × 100 = 66.7. This ratio indicates the economic burden on the working-age population to support dependents.
Reference: Park's Textbook of Preventive and Social Medicine, 26th ed.
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