Question
In 2020, the number of students in a school was 1,200. It
rose by 15% in 2021, then fell by 10% in 2022, and finally rose by 25% in 2023. What was the total number of students by the end of 2023?Solution
ATQ,
Students in 2021 = 1.15 ร 1200 = 1380
Students in 2022 = 0.90 ร 1380 = 1242
Students in 2023 = 1.25 ร 1242 = 1552.5
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