Foundation June 2019 Paper 3 Q7
7 The pictogram shows information about the houses in a street.
Each house has 3, 4 or 5 bedrooms.
In total, how many bedrooms do these houses have? [3 marks]
| Answer | Mark | Comments |
|---|---|---|
| Alternative method 1 | ||
| \(4.5 \times 2\) or 9 and \(5 \times 2\) or 10 and \(1.5 \times 2\) or 3 | M1 | allow one error or omission |
| their \(9 \times 3\) and their \(10 \times 4\) and their \(3 \times 5\) or 27 and 40 and 15 | M1dep | their numbers of houses must be whole numbers |
| 82 | A1 | |
| Alternative method 2 | ||
| \(4.5 \times 3\) and \(5 \times 4\) and \(1.5 \times 5\) or 13.5 and 20 and 7.5 or 41 | M1 | allow one error or omission |
| \(2 \times (4.5 \times 3 + 5 \times 4 + 1.5 \times 5)\) or \(2 \times (\)their 13.5 + their 20 + their 7.5\()\) or \(2 \times\) their 41 | M1dep | |
| 82 | A1 | |
Additional guidance
| Two of 27, 40 and 15 correct implies first method mark | M1M0 |
| 22 without working | M0 |