Higher January 2021 Paper 2R Q6
6 On Wednesday, the price of 1 litre of petrol was £1.26
The price of petrol on Wednesday was 5% more than the price of petrol on the previous Monday.
Calculate the price of 30 litres of petrol on the previous Monday.
(3)
| Scheme | Marks |
|---|---|
| \(x \times 1.05 = 1.26\) oe eg \((x =)\; 1.26 \div 1.05\) oe (= 1.2) or 30 × 1.26 (= 37.80) or 30 ÷ 1.05 (= 28.57) | M1 |
| 30 × “1.2” or “37.80” ÷ 1.05 or “28.57…” × 1.26 | M1 |
| Correct answer scores full marks (unless from obvious incorrect working) Answer: 36 | A1 |
| (3) | |
| (3 marks) |
Notes
A1: cao
If no marks awarded,
SC B1 for one operation used correctly, even with another incorrect operation.
eg 1.26 × 0.95 × 30 oe
or 1.26 × 1.05 × 30 oe
or 1.26 ÷ 0.95 × 30 oe