4024/11 May/Jun 2024, Question 9: Distance-Time Graphs
Cambridge O Level Mathematics 4024 · Paper 11 (Non-calculator) · Non-calculator · 3 marks
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The question, in short
Use a distance–time graph with stages AB and BC to find the cyclist's average speed for BC, then find the time a bus at 20 km/h takes for 50 km.
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Part (a) · 2 marks
From the graph, work out the average speed for stage BC, from B at 09 00 to C at 09 30.
- 1Distance BC = 27 − 21 = 6 km
- 2Time = 09 30 − 09 00 = 30 min = 0.5 h
- 3Speed = 6 ÷ 0.5 = 12 km/h
Answer12
Part (b) · 1 mark
A bus averages 20 km/h; work out how long it takes to travel 50 km.
- 1Time = 50 ÷ 20 = 2.5 hours
Answer2.5
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