0580/41 May/Jun 2025, Question 22: Calculating with Bounds
Cambridge IGCSE Mathematics 0580 · Paper 41 (Extended) · Calculator · 3 marks
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The question, in short
Using I = V/R with V = 50 to the nearest 10 and R = 13 to the nearest integer, work out the upper bound of I.
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Solution · 3 marks
- 1Upper bound of V = 50 + 5 = 55
- 2Lower bound of R = 13 − 0.5 = 12.5
- 3Upper bound of I = 55 ÷ 12.5 = 4.4
Answer4.4
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