Foundation June 2022 Paper 1 Q9
9 A pattern is made out of blue tiles and yellow tiles.
\(\dfrac{1}{3}\) of the tiles are blue.
There are 36 yellow tiles.
Work out the total number of tiles. [3]
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| 54 | 3 | M2 for \(36 \div 2 \times 3\) oe or \(36 + 18\) or M1 for \(36 \div 2\) oe may be soi by 18 | Allow 0.66… to imply \(\dfrac{2}{3}\) |
| OR breakdown method B2 for 36 associated with \(\dfrac{2}{3}\) and 18 associated with \(\dfrac{1}{3}\) or B1 for 36 associated with \(\dfrac{2}{3}\) or 18 associated with \(\dfrac{1}{3}\) | Do not accept e.g. \(36 \times \dfrac{2}{3}\) May be shown e.g. on a bar model 36 associated with \(\dfrac{2}{3}\) and 12 associated with \(\dfrac{1}{3}\) scores 0 | ||