Question
The population of a town increased by 20% in the first
year, decreased by 10% in the second year and again increased by 25% in the third year. If the population at the end of the third year is 27000, what was the initial population?Solution
ATQ, Let initial population = x After first year = 1.2x After second year = 1.2x x 0.9 = 1.08x After third year = 1.08x x 1.25 = 1.35x Given, 1.35x = 27000 x = 20000 Hence, the correct answer is 20,000.
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