Foundation November 2021 Paper 2 Q19
19 A worker received a 10% pay increase in 2017 and a further 10% pay increase in 2018.
The worker says
Over these two years, my pay increased by 10% + 10% = 20%.
The worker is incorrect.
Work out the correct percentage increase.
You must show your working. [5]
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| Shows actual increase is 21 [%] with correct working | 5 | M3 for [\(k \times\)] \(1.1 \times 1.1\) oe A1 for answer 121[%] or for 1.21 OR M1 for 1.1 oe soi A1 for a correct evaluation of the first stage with their value If 0 scored SC2 for answer 21[%] or SC1 for 121% or 1.21 with no working | “Correct working” requires evidence of at least M3 or alternate convincing approach Allow method marks if contained in correct method involving any invented starting price e.g. M3 for \(100 \times 1.1 \times 1.1\) oe e.g. for M1A1 uses 80 as value then gives 88 in working |