Mathematics · Oct / Nov 2020 · Paper 21 · Question 15
0580
As printed in the paper
The question as text
20 18 16 14 12 10 8 6 4 2 0 0 10 20 30 40 50 Time (s) Speed (m/s) 60 70 80 90 100 Motorbike Car The diagram shows the speed–time graph for 100 seconds of the journey of a car and of a motorbike.
Read automatically from the paper; the printed page above is exact.
Show the answer and mark scheme
15(a)[1]
0.3 [1]
15(b)[3]
360 [3]
M2 for correct complete area statement e.g. 18 × 60 + 1 2 × 40 × (18 + 6) – 12 × 100 or 1 2 × 6 × (60 + 80) – 1 2 × 6 × 20 or for answer 420
or M1 for one area calculation
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