Foundation November 2017 Paper 1 Q18
18 Maria mixes white paint and red paint in the ratio 2 : 3.
She makes a total of 15 litres of paint.
How much more red paint does she need to add to the mixture so that the ratio of white paint to red paint becomes 1 : 5? [4]
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| 21 | 4 | B1 for 6 and 9 M1 for their 6 \(\times\) 5 M1 for their 6 \(\times\) 5 – their 9 | Implied by 6 : 30 |