Higher November 2019 Paper 1 Q6
6 4 red bricks have a mean weight of 5 kg.
5 blue bricks have a mean weight of 9 kg.
1 green brick has a weight of 6 kg.
Donna says,
“The mean weight of the 10 bricks is less than 7 kg.”
Is Donna correct?
You must show how you get your answer. (3)
| Answer | Mark | Mark scheme |
|---|---|---|
| No (supported) | P1 | for process to find total weight of the 4 red bricks, eg. \(5 \times 4\ (= 20)\) or for process to find total weight of the 5 blue bricks eg. \(9 \times 5\ (= 45)\) |
| P1 | for process to find total weight of all 10 bricks, eg. \(\text{``}20\text{''} + \text{``}45\text{''} + 6\ (= 71)\) | |
| C1 | No with correct supporting evidence Acceptable examples No, it is 7.1 She is wrong, it is 0.1 more No, (the total weight is) 71 not 70 Not acceptable examples Yes … No, it is 71 |
Additional guidance
May be seen next to statements
20 must be clearly referenced to the red bricks.
\(5 + 9 + 6 = 20\) gets no marks
Candidates working in grams will need to give 7100 and 7000 for example as comparable figures