Foundation June 2019 Paper 1 Q15
15 Anna and Paddy take part in the same fun run.
Anna completed the fun run in 2 hours.
Her average speed was 6 kilometres per hour.
Paddy completed the fun run in 90 minutes.
(a) Work out Paddy’s average speed in kilometres per hour. [4]
(b) Anna says
Because I stopped for drinks, my average running speed was faster than 6 kilometres per hour.
Give one reason to support Anna’s statement. [1]
| Answer | Marks | Part marks and guidance |
|---|---|---|
| 8 nfww | 4 | M3 for \(\dfrac{12}{1.5}\) or \(\dfrac{12}{90} \times 60\) or \(\dfrac{2}{1.5} \times 6\) or \(\dfrac{120}{90} \times 6\) oe or M2 for \(\dfrac{12}{90}\) or \(\dfrac{2}{1.5}\) or \(\dfrac{120}{90}\) oe OR B1 for 12 [as a distance] B1 for 1.5 or \(1\dfrac{1}{2}\) [as a time] M1 for \((2 \times 6) \div 1.5\) |
| Answer | Marks | Part marks and guidance |
|---|---|---|
| Correct reason | 1 | See appendix |
Appendix
Exemplar responses for Q15(b)
| Response | Mark |
|---|---|
| The stopping time would have been counted as it’s an average for the whole race | 1 |
| If she hadn’t stopped her time would have been less than 2 hours which would change her speed | 1 |
| Average running speed is not the same thing as average speed | 1 |
| She was running for less than 2 hours | 1 |
| \(12 \div (\text{a time} \lt 2) \gt 6\) oe | 1 |
| If she’d carried on she would have done it in 90 mins | 0 |
| Because she stopped her running speed slowed down | 0 |
| She could have stopped for a long time | 0 |
| She slowed down to stop (no concept of average) | 0 |
| Because she kept herself hydrated/gave herself energy | 0 |
| She had a rest so she could run faster | 0 |