2016 · Q113
In a medium-sized township, the trend of annual migration is an addition of 20% of the population as it was at the beginning; also 15% of the population as it was at the beginning is estimated to relocate elsewhere every year. If the current population is 80000, what is the likely population three years hence?
Population, Development and GlobalizationPopulation and demography
- A90000
- B91200
- C92000
- D92610
Explanation
Net annual change = +20% − 15% = +5% of the beginning-year population. After 3 years: 80,000 × 1.05³ = 80,000 × 1.157625 = 92,610. Hence (D).