0580/11 Oct/Nov 2025, Question 22: Direct Proportion in Real Life
Cambridge IGCSE Mathematics 0580 · Paper 11 (Core) · Non-calculator · 3 marks
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The question, in short
Recipe for 12 cookies lists flour, butter, sugar, cocoa and egg amounts. Find flour needed for 24 cookies, and decide whether 28 g cocoa suffices for 18 cookies.
Summarised in our own words. Use the official paper for the exact wording and any diagrams.
Part (a) · 1 mark
Work out the amount of flour required to make 24 cookies from the recipe.
- 124 cookies = 2 × 12, so flour = 2 × 100 = 200 g
Answer200
Part (b) · 2 marks
Using 28 g cocoa, decide if enough exists for 18 cookies and explain the reasoning.
- 1Cocoa for 18 cookies = 20 × 18/12 = 30 g
- 230 g > 28 g, so No, he does not have enough cocoa
AnswerNo and a correct statement based on correct reasoning or calculations
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