Higher November 2020 Paper 2 Q11
11. A full bottle containing 1 litre of cooking oil has mass 1270 g.
400 ml of cooking oil is used.
The bottle with the remaining cooking oil has mass 900 g.
Calculate the mass of the empty bottle. [4]
| Scheme | Marks | Comments |
|---|---|---|
| 1270 – 900 (=370) | M1 | |
| \(\dfrac{370}{400}\times1000\) (=925) or \(\dfrac{370}{400}\times600\) (=555) | m1 | |
| 1270 – 925 or 900 - 555 | m1 | |
| 345 (g) | A1 | CAO If M1 m0 m0 A0 then award SC1 for an answer of 653(.33..g) from use of 400 ml remaining |
Alternative method
| Scheme | Marks | Comments |
|---|---|---|
| 1270 – 900 (=370) | M1 | |
| (Bottle and 200 ml have mass) 900 – 370 (= 530 g) | m1 | FT ‘their 1270 – 900’ |
| (Mass of bottle =) 530 – 370 ÷ 2 | m1 | |
| 345 (g) | A1 | CAO |
| (4) |