Foundation June 2017 Paper 2 Q22
22. Wellbuilt Caravans decided to reduce the mass of their caravans to make them easier to tow behind modern lightweight cars.
In 2015, they reduced the mass of their caravans by 8%.
In 2016, they reduced the mass of their caravans by a further 3%.
The original mass of a WB1 caravan was 1000 kg.
(a) What is the mass of a new WB1 caravan after both the reductions? [3]
(b) What percentage of the original mass was the caravan reduced by? [2]
| Scheme | Marks | Comments |
|---|---|---|
| 2015 1000 × 0·92 (=920) | M1 | Or equivalent full method. Allow in reversed order (× 0·97 × 0·92) |
| 2016 1000 × 0·92 × 0·97 | M1 | FT ‘their 920’ |
| 892.4(kg) | A1 | CAO |
| Scheme | Marks | Comments |
|---|---|---|
| (1000 – 892·4)/1000 (× 100) | M1 | Or equivalent full method. FT ‘their 892·4’ |
| = 10·76 (%) | A1 | |
| (5) |