4MA1/1H Jun 2025, Question 11: Ratio and compound interest
Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 1H (Higher) · Calculator · 2 marks
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The question, in short
$2500 is invested where invested : interest after 2 years = 20 : 3, and $3000 at 4% compound interest for 2 years. How much more interest does the first earn?
Summarised in our own words. Use the official paper for the exact wording and any diagrams.
Solution · 2 marks
- 1Area = 140/360 × π × 16²
- 2= 7/18 × 256π
- 3= 312.76…
- 4= 313 (3 s.f.)
Answer313
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