Foundation June 2023 Paper 1 Q15
15 A large rectangle has a rectangular hole cut out.
Not drawn accurately
Work out the percentage of the large rectangle that is shaded. [3 marks]
| Answer | Mark | Comments |
|---|---|---|
| \(2 \times 3\) or 6 or \(4 \times 5\) or 20 or 14 or 0.3 | M1 | oe |
| (their 20 \(-\) their 6) \(\div\) their 20 or \(1 - \dfrac{6}{20}\) or \(\dfrac{14}{20}\) or \(1 - 0.3\) or 0.7 or 30(%) | M1dep | |
| 70 | A1 | SC2 44.4 or better SC1 \(\dfrac{4}{9}\) or \(\dfrac{8}{18}\) |
Additional guidance
SC1 \(\dfrac{4}{9}\) or \(\dfrac{8}{18}\) use of perimeter without conversion to a percentage
SC2 44.4 use of perimeter converted to a percentage
Up to M2 may be awarded for correct work seen in multiple attempts even if not subsequently used
Ignore any units