Higher June 2022 Paper 1 Q7
7 Here are two cubes, A and B.
Cube A has a mass of 81 g.
Cube B has a mass of 128 g.
Work out
the density of cube A : the density of cube B
Give your answer in the form \(a : b\), where \(a\) and \(b\) are integers. (3)
| Answer | Mark | Mark scheme |
|---|---|---|
| 3 : 2 | P1 | for a process to find either volume eg \(3^3\ (= 27)\) or \(4^3\ (= 64)\) |
| P1 | for showing density A \(= 81 \div \text{``}27\text{''}\ (= 3)\) or density B \(= 128 \div \text{``}64\text{''}\ (= 2)\) | |
| A1 | for 3 : 2 oe |
Additional guidance
Ignore units quoted