0580/41 May/Jun 2025, Question 8: Calculating a Percentage of a Quantity
Cambridge IGCSE Mathematics 0580 · Paper 41 (Extended) · Calculator · 4 marks
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The question, in short
Hadi can pay $980 once or use a plan with 20% of $980 plus 12 payments of $75.25. Find the plan's total cost and its percentage increase over the single payment.
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Part (a) · 2 marks
Calculate the total amount Hadi pays under the monthly plan: 20% of $980 plus 12 payments of $75.25.
- 120% of 980 = 0.2 × 980 = 196
- 212 × 75.25 = 903
- 3Total = 196 + 903 = $1099
Answer1099
Part (b) · 2 marks
Find the percentage increase in cost using the monthly plan compared with the single payment of $980.
- 1Increase = 1099 − 980 = 119
- 2119 ÷ 980 × 100 = 12.14…%
- 3≈ 12.1%
Answer12.1 or 12.14…
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