Foundation November 2021 Paper 2 Q11
11. A supermarket sells bottles of the same shampoo in 3 sizes.
| Own Brand Shampoo | 400 ml | 700 ml | 900 ml |
|---|---|---|---|
| Price | £1.74 | £3.01 | £3.96 |
Which size of bottle offers the best value for money?
400 ml ☐ 700 ml ☐ 900 ml ☐
Show how you decide. [3]
| Scheme | Marks | Comments | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Attempts to find a unit cost e.g. per 100 ml (£)1.74 ÷ 4 , (£)3.01 ÷ 7, (£)3.96 ÷ 9 | M1 | For at least 2 of the 3 bottles | ||||||||||||
| Finds a unit cost e.g. per 100 ml (£)0.435, (£)0.43, (£)0.44 | A1 | For correct unit costs for at least 2 of the 3 bottles Ignore incorrect units
| ||||||||||||
| All unit costs correct and medium bottle indicated | A1 | They may use different unit costs to compare small with medium and then medium with large, so it may be in steps; units may be omitted but must be consistent. | ||||||||||||
| (3) |