4MA0 Foundation June 2017 Paper 1 Q22
22 In 2014, Donald’s weekly pay was $640
In 2015, Donald’s weekly pay was $668.80
(a) Work out the percentage increase in Donald’s pay between 2014 and 2015 (3)
In 2015, Donald’s weekly pay was 95% of his weekly pay in 2016
(b) Work out Donald’s weekly pay in 2016 (3)
| Scheme | Marks |
|---|---|
| 668.8 – 640 or 28.8 | M1 |
| “28.8” ÷ 640 (×100) or 0.045 | M1 |
| 4.5 | A1 |
| (3) |
Notes
M1: dep
M2 for \(\dfrac{668.8}{640}\) (×100) or 1.045 or 104.5
| Scheme | Marks |
|---|---|
\(\dfrac{668.8}{95} \times 100\) oe or \(\dfrac{668.8}{0.95}\) oe | M2 |
| 704 | A1 |
| (3) | |
| (6 marks) |
Notes
M2: for a complete method
If not M2 then award M1 for
\(\dfrac{668.8}{95}\) (=7.04) or
\(0.95x = 668.8\) oe