Foundation November 2023 Paper 1 Q7
7 Ollie and Rachel run a marathon race.
(a) Ollie starts the race at 9.15 am
He takes \(3\dfrac{3}{4}\) hours to finish the race.
At what time does he finish? [2 marks]
(b) Rachel has a target time of 4 hours 10 minutes.
She has been running for 186 minutes.
To meet her target, how many minutes does she have left to finish the race? [3 marks]
| Answer | Mark | Comments |
|---|---|---|
| 3 h 45 min or \(9.15 + 3 + 45\) or \(9.15 + 4 - 15\) or 1.15 (pm) \(-\) 15 or \(9\dfrac{1}{4} + 3\dfrac{3}{4}\) or 13(.00 am) or 1 (o’clock) or 1(.00 am) | M1 | oe condone mixed units |
| 13.00 or 1(.00) pm | A1 |
Additional guidance
| Condone 13.00 pm | M1A1 |
| \(9.15 + 3\dfrac{3}{4}\) or \(12.15 + \dfrac{3}{4}\) without valid further working | M0A0 |
| Answer | Mark | Comments |
|---|---|---|
| Alternative method 1 – working in minutes | ||
| \(4 \times 60 + 10\) or 250 | M1 | oe |
| their \(250 - 186\) | M1 | oe their 250 must be \(\gt 186\) |
| 64 | A1 | SC2 69 SC1 224 |
| Alternative method 2 – working in hours | ||
| \(186 \div 60\) or 3 h 6 min | M1 | oe implied by 3.1 or 1 h 4 min |
| 4 h 10 min − their 3 h 6 min or 1 h 4 min | M1 | oe their 3 h 6 min must be \(\lt\) 4 h 10 min |
| 64 | A1 | SC2 69 SC1 224 |
Additional guidance
SC2 comes from incorrect conversion of 3.1 h to 3 h 1 min
SC1 comes from use of 100 min in an hour