Foundation June 2022 Paper 1 Q9
9 Shona has 14 dresses.
50% of these dresses are red.
She gives 5 of her red dresses to a charity shop.
She buys 1 new red dress.
What percentage of the dresses she has now are red? [4 marks]
| Answer | Mark | Comments |
|---|---|---|
| \(\dfrac{50}{100} \times 14\) or 7 | M1 | oe eg \(14 \div 2\) |
| \(14 - 5 + 1\) or 10 or their \(7 - 5 + 1\) or 3 | M1 | oe their 7 must be an integer, where \(4 \lt\) their \(7 \lt 14\) 3 implies M1M1 |
| \(\dfrac{3}{10}\) or 3 : 7 | A1 | oe |
| 30 | B1ft | ft their \(\dfrac{3}{10}\) correctly converted to a percentage |
Additional guidance
| For the B1ft, their percentage must be correct to 2sf or better | |
| 30 on the answer line with no incorrect working | M2A1B1 |
| 3 in 10 or 3 out of 10 | M2A1 |
| 3 : 10 | M2A0 |
| \(7 - 5 = 3 + 1 = 4\), answer 40 (10 implied) | M2A0B1ft |