4MA0 Foundation January 2015 Paper 1R Q18
18 Lisa sees a dress in a sale.
The normal price of the dress is $45
The price of the dress is reduced by 12% in the sale.
(a) Work out the price of the dress in the sale. (3)
Lisa’s weekly pay increases from $525 to $546
(b) Calculate her percentage pay increase. (3)
| Scheme | Marks |
|---|---|
| \(\dfrac{12}{100} \times 45\) (=5.4) | M1 |
| 45 − "5.4" | M1 |
| 39.6(0) | A1 |
| (3) |
Notes
M1: or M2 for 45 × 0.88 oe eg 45 × (1 − 0.12)
(NB 45 × (1−12%) scores zero unless accompanied by a correct answer)
M1: Dep on correct method for 12%
| Scheme | Marks |
|---|---|
| 546 − 525 (=21) | M1 |
| \(\dfrac{\text{'21'}}{525}\) | M1 |
| 4 | A1 |
| (3) | |
| (6 marks) |
Notes
Alternative
| Scheme | Marks |
|---|---|
| 546/525(=1.04) | M1 |
| Dep ((“1.04” – 1) × 100) or 546/525 × 100 – 100 | M1 |
| 4 | A1 |