0580/13 Oct/Nov 2022, Question 9: Simple Interest
Cambridge IGCSE Mathematics 0580 · Paper 13 (Core) · Calculator · 2 marks
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The question, in short
Nerina invests $5400 at r% per year simple interest; after 3 years the interest totals $429.30. Calculate the value of r.
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Solution · 2 marks
- 15400 × 3 × r/100 = 429.30
- 2162r = 429.30
- 3r = 2.65
Answer2.65
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