Higher June 2023 Paper 2 Q6
6 Last year a family recycled 800 kg of household waste.
57% of this waste was paper and glass.
weight of paper recycled : weight of glass recycled = 12 : 7
Calculate the weight of glass the family recycled. (3)
| Answer | Mark | Mark scheme |
|---|---|---|
| 168 | P1 | for a start to the process, eg \(\dfrac{57}{100} \times 800\ (= 456)\) or \(57 \div (12 + 7)\ (= 3)\) or \(800 \div (12 + 7)\ (= 42.1\ldots)\) or [amount] \(\times \dfrac{57}{100}\) or [amount] \(\times \dfrac{7}{12 + 7}\) |
| P1 | for a complete process to find the weight of glass, eg \(\dfrac{57}{100} \times 800 \times \dfrac{7}{12 + 7}\) oe | |
| A1 | for an answer in the range 167.9 to 168 SCB2 for an answer of 288 |
Additional guidance
May be seen as part of other calculations, eg
\(\dfrac{7}{12 + 7} \times 57\ (= 21)\)
or \(\dfrac{7}{12 + 7} \times 800\ (= 294.7\ldots)\)
[amount] can be any figure considered as being 57% of 800 or 43% of 800 calculated incorrectly or a figure calculated using a full or partial ratio incorrectly as a first step