Question
A city’s population rose by 8% in the first year,
increased by 10% in the second year, and then dropped by 12% in the third year. If the population in 2023 was 33,264, find its population in 2020.Solution
ATQ,
Let the population in 2020 be ‘x’.
ATQ,
x × 1.08 × 1.10 × 0.88 = 33264
Or, x = 33264 × (1/1.08) × (1/1.10) × (1/0.88)
So, x = 36,000
Therefore, the population of the city in 2020 = x = 36,000
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