Foundation June 2018 Paper 3 Q13
13 A car travels 3.5 miles in 5 minutes.
Work out the average speed in miles per hour. [3 marks]
| Answer | Mark | Comments |
|---|---|---|
| Alternative method 1 | ||
| \(60 \div 5\) or 12 or \(3.5 \div 5\) or 0.7 | M1 | oe |
| their \(12 \times 3.5\) or their \(0.7 \times 60\) | M1dep | oe |
| 42 | A1 | |
| Alternative method 2 | ||
| 7 (miles) in 10 (minutes) or 10.5 (miles) in 15 (minutes) or 14 (miles) in 20 (minutes) or 21 (miles) in 30 (minutes) or 35 (miles) in 50 (minutes) | M1 | |
| \(7 \times 6\) or \(10.5 \times 4\) or \(14 \times 3\) or \(21 \times 2\) or \(35 + 3.5 \times 2\) | M1dep | oe |
| 42 | A1 | |
| Alternative method 3 | ||
| \(5 \div 60\) or 0.08(3…) | M1 | oe |
| \(3.5 \div\) their 0.08(3…) | M1dep | oe |
| 42 | A1 | Accept [42, 42.2] |
Additional guidance
| \(\dfrac{5}{60}\) or \(\dfrac{1}{12}\) is oe 0.08(3…) | M1 |