1MA0 Foundation March 2013 Paper 2 Q11
11 George is going to buy exactly 10 ink cartridges.
Find the difference in cost between the cheapest way and the most expensive way to buy the 10 ink cartridges. (5)
| Working | Answer | Mark | Notes |
|---|---|---|---|
| \(9.39 \times 10\) \(24.30 \times 3 + 9.39\) \(93.90 - 82.29\) | £11.61 | 5 | M1 for a correct method to find the most expensive way to buy the 10 cartridges (= 93.90) M1 for a correct method to find the least expensive way to buy the 10 cartridges (= 82.29) M1 (dep on M1 scored) for a correct method to find the difference between their least and their most expensive way, provided that both totals are for the cost of exactly 10 cartridges A1 for 11.61 B1 (indep) for correct units |