Higher November 2023 Paper 1 Q5
5. Jen is mixing some paints to make brown paint.
She made orange paint by mixing red paint and yellow paint.
40% of the orange paint was red paint.
She then mixes the orange paint with some blue paint in the ratio 20 : 21 to make brown paint.
What fraction of the brown paint is red paint? [3]
| Scheme | Marks | Comments |
|---|---|---|
| 8 parts are red | B2 | B1 for \(0.4\times20\) oe or writing a ratio 8 : 12 (: 21) or 12 : 8 (: 21) |
| \(\dfrac{8}{41}\) | B1 | CAO |
| (3) |