Question
A town's population increased by 5% in the first year,
increased by 15% in the second year, and decreased by 9% in the third year. If the population in 2023 was 24,063, find its population in 2020.Solution
Let the population in 2020 be 'x'. ATQ, x × 1.05 × 1.15 × 0.91 = 24063. Or, x = 24063 / (1.05 × 1.15 × 0.91). Calculating further, x ≈ 21823. Therefore, the population of the town in 2020 = x = 21823.
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