Foundation June 2019 Paper 3 Q14
14 In this question use
1 cubic foot = 6.23 gallons
1 cubic foot = 0.028 cubic metres
Convert 3115 gallons into cubic metres. [3 marks]
| Answer | Mark | Comments |
|---|---|---|
| Alternative method 1 | ||
| \(3115 \div 6.23\) or 500 | M1 | \(3115 \times 0.028\) or 87.22 |
| their \(500 \times 0.028\) | M1dep | their \(87.22 \div 6.23\) |
| 14 | A1 | |
| Alternative method 2 | ||
| \(6.23 \div 0.028\) or 222.5 | M1 | \(6.23 \div 3115\) or 0.002 or \(\dfrac{1}{500}\) |
| \(3115 \div\) their 222.5 | M1dep | \(0.028 \div\) their 0.002 or \(0.028 \div\) their \(\dfrac{1}{500}\) |
| 14 | A1 | |
| Alternative method 3 | ||
| \(0.028 \div 6.23\) or 0.00449(…) or 0.0045 or \(\dfrac{2}{445}\) | M1 | |
| \(3115 \times\) their 0.00449(…) or \(3115 \times 0.0045\) or \(3115 \times\) their \(\dfrac{2}{445}\) | M1dep | |
| 14 | A1 | |
Additional guidance
| \(500 \times 0.028\) and \(14 \times 0.028\) | M1M1A0 |
| \(500 \times 0.028\) and \(14^3\) | M1M1A0 |
| \(500 \times 0.028^3\) | M1M0 |