4MA1/2FR Jun 2020, Question 10: Direct Proportion in Real Life
Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 2FR (Foundation) · Calculator · 4 marks
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The question, in short
Car does 3 laps in 72 seconds at a steady lap time. Decide whether 68 laps take under half an hour and justify the conclusion.
Summarised in our own words. Use the official paper for the exact wording and any diagrams.
Solution · 4 marks
- 172 ÷ 3 = 24
- 224 × 68 = 1632
- 31632 ÷ 60 = 27.2
- 427.2 < 30
- 5Yes
AnswerYes, because one lap takes 72 ÷ 3 = 24 s, so 68 laps take 1632 s = 27.2 minutes, which is less than 30
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