Foundation November 2017 Paper 2 Q20
20. Tom is trying to increase £2480 by 8%.
This is Tom’s work:
| 2480 × 0·8 = 1984 |
| 2480 + 1984 = 4464 |
| Final answer = £4464 |
(a) Explain the error that he has made. [1]
(b)
What should Tom’s answer have been?
Show all your working. [2]
(c) Tom could have used a multiplier to work out the correct answer in one calculation.
Write the multiplier in the box below. [1]
Write the multiplier in the box below. [1]
2480 × = correct final answer
| Scheme | Marks | Comments |
|---|---|---|
| explaining that 0.8 is incorrect. e.g ‘It is not 0.8, it should be 0.08’ or equivalent. | B1 | Accept any indication that 0.8 is incorrect e.g. ‘the first line is 198.4 not 1984’. |
| Scheme | Marks | Comments |
|---|---|---|
| 2480 x 0.08 + 2480 OR 198.4(0) + 2480 | M1 | |
| = (£) 2678.4(0) | A1 |
| Scheme | Marks | Comments |
|---|---|---|
| 1.08 | B1 | |
| (4) |