Higher June 2023 Paper 4 Q2
2 The price of petrol decreases from £1.32 per litre to £1.02 per litre.
Calculate the percentage decrease in the price. [3]
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| 22.7[2…] or 22.73 or 23 or \(\frac{250}{11}\) | 3 | M2 for \(\left(1 - \frac{1.02}{1.32}\right)\) [× 100] oe or \(\frac{1.32 - 1.02}{1.32}\) [× 100] oe or \(\frac{1.02 - 1.32}{1.32}\) [× 100] oe or M1 for \(\frac{1.02}{1.32}\) [× 100] oe e.g \(\frac{17}{22}\) | condone −22.7[2…] or −22.73 or −23 for 3 marks M2 implied by 0.227[2…] or 0.2273 or 0.23 or \(\frac{5}{22}\) M1 implied by 0.7727…, 0.77[3], 77.27, 77[.3] or 2270, 2272, 2273, 2300 Accept fully correct non-calculator methods |