4MA1/1HR Jan 2022, Question 7: Speed, Distance and Time
Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 1HR (Higher) · Calculator · 4 marks
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The question, in short
Calculate Milly's overall average speed in km/h for the whole trip from Anesey to Duckbridge, using the three legs described, rounded to one decimal place.
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Solution · 4 marks
- 1Times: 2.5 h, then 220 ÷ 80 = 2.75 h, then 50 min = 50/60 h
- 2Last distance = 72 × 50/60 = 60 km
- 3Total distance = 245 + 220 + 60 = 525 km; total time = 6.083… h
- 4Average speed = 525 ÷ 6.083… = 86.3
Answer86.3
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