0580/11 Oct/Nov 2023, Question 19: Simple Interest
Cambridge IGCSE Mathematics 0580 · Paper 11 (Core) · Calculator · 3 marks
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The question, in short
Indira invests $6000 at r% per year simple interest; after 4 years the investment is worth $6840. Find the value of r.
Summarised in our own words. Use the official paper for the exact wording and any diagrams.
Solution · 3 marks
- 1Interest = 6840 − 6000 = 840
- 26000 × 4 × r/100 = 840
- 3240r = 840, r = 3.5
Answer3.5
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