0580/23 Oct/Nov 2023, Question 12: Reverse Percentages
Cambridge IGCSE Mathematics 0580 · Paper 23 (Extended) · Calculator · 3 marks
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The question, in short
Oliver sent 22% more messages in June than May, and 305 in June. Find how many more messages June had than May.
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Solution · 3 marks
- 1May × 1.22 = 305
- 2May = 305 ÷ 1.22 = 250
- 3Increase = 305 − 250 = 55
Answer55
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