1MA0 Higher November 2013 Paper 2 Q7
*7 Plants are sold in three different sizes of tray.
A small tray of 30 plants costs £6.50
A medium tray of 40 plants costs £8.95
A large tray of 50 plants costs £10.99
Kaz wants to buy the tray of plants that is the best value for money.
Which size tray of plants should she buy?
You must show all your working. (4)
| Answer | Mark | Notes |
|---|---|---|
| Small with correct figures for comparison | 4 | M1 for one calculation eg \(6.5 \div 30\) (=0.216...) or \(8.95 \div 40\) (=0.22375) or \(10.99 \div 50\) (=0.2198) M1 for all three calculations eg \(6.5 \div 30\) (=0.216...) and \(8.95 \div 40\) (=0.22375) and \(10.99 \div 50\) (=0.2198) A1 for 0.216(6...) and 0.223(75) and 0.219(8...); can be rounded or truncated as long as they remain different C1 (dep on M1) for conclusion ft from three comparable figures [could use different figures relating to 30, 40, 50] OR M1 for one calculation eg \(6.5 \times 20\) (=130) or \(8.95 \times 15\) (=134.25) or \(10.99 \times 12\) (=131.88) M1 for three calculations eg \(6.5 \times 20\) (=130) and \(8.95 \times 15\) (=134.25) and \(10.99 \times 12\) (=131.88) A1 for 130 and 134(.25) and 131(.88); can be rounded or truncated as long as they remain different C1 (dep on M1) for conclusion ft from three comparable figures eg cost of 600 plants or comparing small and medium and small and large e.g. 120 plants and 150 plants separately] OR M1 for one calculation e.g \(30 \div 6.5\) (= 4.615…) or \(40 \div 8.95\) (= 4.469…) or \(50 \div 10.99\) (= 4.549…) M1 for three calculations e.g. \(30 \div 6.5\) (= 4.615…) and \(40 \div 8.95\) (= 4.469…) and \(50 \div 10.99\) (= 4.549…) A1 for 4.6(15…) and 4.4(69…) and 4.5(49…) can be rounded or truncated as long as they remain different C1 (dep on M1) for conclusion ft from three comparable figures [or any other calculations leading to comparable figures] |