0580/13 May/Jun 2026, Question 15: Percentage Increases and Decreases
Cambridge IGCSE Mathematics 0580 · Paper 13 (Core) · Non-calculator · 4 marks
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The question, in short
Pizza price problems: find a percentage decrease from $25 to $19, and find the cost of a $15 pizza after adding a 10% service charge.
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Part (a) · 2 marks
Work out the percentage decrease when a pizza's cost drops from $25 to $19.
- 1Decrease = 25 − 19 = $6
- 2Percentage decrease = 6/25 × 100 = 24%
Answer24
Part (b) · 2 marks
Find the total cost of a $15 pizza once a 10% service charge is added.
- 110% of 15 = 1.50
- 2Cost = 15 + 1.50 = $16.50
Answer16.50
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Also searched as: 0580/13/M/J/26 · 0580_s26_qp_13 · 0580 s26 13 · question 15.
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