0580/23 Oct/Nov 2023, Question 18: Percentage Increases and Decreases
Cambridge IGCSE Mathematics 0580 · Paper 23 (Extended) · Calculator · 3 marks
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The question, in short
F is proportional to m times a. Find the percentage change in F when m rises by 40% and a falls by 15%.
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Solution · 3 marks
- 1F = kma
- 2New F = k × 1.4m × 0.85a = 1.19kma
- 3Percentage change = 19% (increase)
Answer19
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