Foundation November 2020 Paper 1 Q12
12. Gemma has her kitchen floor tiled.
The pattern is made up of 80 cream tiles and 24 green tiles.
(a)
Write the ratio of cream tiles to green tiles in its simplest form. [2]
cream tiles : green tiles = ……… : ………
(b)
Gemma then has her hallway tiled with cream tiles.
For the kitchen and hallway, the ratio of cream tiles : green tiles is 19 : 3.
How many cream tiles were used altogether to tile the kitchen and hallway? [2]
(c)
Gemma was quoted £820 to have her kitchen tiled.
Tiling the hallway increased this by 70%.
By how much did her quote increase? [2]
| Scheme | Marks | Comments |
|---|---|---|
| 10 : 3 | B2 | Mark final answer B1 for any correct simplified ratio not in simplest form e.g. 40 : 12; may be in working space If no marks, award SC1 for a final answer 3 : 10 |
| Scheme | Marks | Comments |
|---|---|---|
| 152 CAO | B2 | Mark final answer B1 for 19 × (24 ÷ 3) oe, si or for finding 152 : 24 from 19 : 3 or for 152 seen and then spoiled by e.g. adding or subtracting 80 or 24 If no marks, award SC1 for final answer 72 |
| Scheme | Marks | Comments |
|---|---|---|
| \(\dfrac{820}{10} \times 7\) or 82 × 7 or \(\dfrac{820}{100} \times 170 - 820\) oe si | M1 | May be seen in stages; allow even if answer then spoiled by e.g. being added to or subtracted from 820 |
| (£) 574 (.00) CAO | A1 | Mark final answer If no marks award SC1 for final answer 1394 |
| (6) |