0580/11 May/Jun 2026, Question 16: HCF and LCM
Cambridge IGCSE Mathematics 0580 · Paper 11 (Core) · Non-calculator · 3 marks
اقرأ هذا الحل مشروحاً بالعربي ←
The question, in short
Buses to Alve leave every 16 minutes and to Riba every 28 minutes, with both departing together at 08 25. Find the next time both buses leave together.
Summarised in our own words. Use the official paper for the exact wording and any diagrams.
Solution · 3 marks
- 116 = 2⁴, 28 = 2² × 7
- 2LCM = 2⁴ × 7 = 112 minutes = 1 h 52 min
- 308 25 + 1 h 52 min = 10 17
Answer10 17
Stuck on a step? Read the free lesson: HCF and LCM
Practise more hcf and lcm questions
Real 0580 past-paper questions, marked on your working like the exam, with a worked solution for every part.
Practise free on LemmaraMore past-paper questions on hcf and lcm
Also searched as: 0580/11/M/J/26 · 0580_s26_qp_11 · 0580 s26 11 · question 16.
Lemmara is an independent study tool, not affiliated with or endorsed by Cambridge International Education. The worked solutions are Lemmara’s own.