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Question
The population of a small locality was 4000 in 1979 and 4500 in 1981, By what percent had the population increase?
Solution
Year 1979 population = 4,000
Year 1981 population = 4,500
Increase in population = (4,500 – 4,000) = 500
percentage of increase in population = `500/4000xx100` = 12.5%
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