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0580/13 May/Jun 2026, Question 5: Dividing in a Given Ratio

Cambridge IGCSE Mathematics 0580 · Paper 13 (Core) · Non-calculator · 3 marks

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The question, in short

Sam's 75 minutes making a cake splits in the ratio 6:10:9 for preparing, cooking and decorating. Find the decorating time and the finish time given a 12 42 start.

Summarised in our own words. Use the official paper for the exact wording and any diagrams.

Part (a) · 2 marks

Using the ratio 6:10:9 and total 75 minutes, work out how many minutes Sam spends decorating.

  1. 16 + 10 + 9 = 25 parts
  2. 21 part = 75 ÷ 25 = 3 minutes
  3. 3Decorating = 9 × 3 = 27 minutes

Answer27

Part (b) · 1 mark

Given Sam begins at 12 42 and the total time is 75 minutes, find the clock time he finishes.

  1. 175 minutes = 1 hour 15 minutes
  2. 212 42 + 1 hour 15 minutes = 13 57

Answer13 57

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Also searched as: 0580/13/M/J/26 · 0580_s26_qp_13 · 0580 s26 13 · question 5.
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