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.
    A 24000 Correct Answer Incorrect Answer
    B 25200 Correct Answer Incorrect Answer
    C 22000 Correct Answer Incorrect Answer
    D 26000 Correct Answer Incorrect Answer
    E 21823 Correct Answer Incorrect Answer

    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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