Foundation June 2025 Paper 2 Q17
17
Which packet of rice is better value for money?
Tick a box.
- A
- B
You must show your working. [3 marks]
| Answer | Mark | Comments |
|---|---|---|
| Alternative method 1: uses values from both A and B | ||
| Method to find the cost of any mass for either packet or a correct cost stated or Method to find the number of grams for any cost for either packet or a correct mass stated or Method to find the differences between masses and costs or £1.50 and 300g stated | M1 | eg \(1.1(0) \div 2\) eg \(2.6(0) \times 2\) eg \(200 \div 1.1(0)\) |
| Fully correct method or values for two comparable/corresponding masses or costs | M1dep | eg \(1.10 \times 5\) and \(2.60 \times 2\) eg \(1.10 \div 2\) and \(2.60 \div 5\) |
| Packet B with correct comparable values | A1 | eg B and 0.55 and 0.52 eg B and 182 and 192 |
| Alternative method 2: scales up from A or down from B | ||
| \(\dfrac{2.6}{1.1}\) or 2.36(3…) or 2.364 or \(\dfrac{1.1}{2.6}\) or 0.423(0…) or 0.4231 or \(\dfrac{500}{200}\) or 2.5 or \(\dfrac{200}{500}\) or 0.4 | M1 | oe |
| \(\dfrac{2.6}{1.1} \times 200\) or [472, 473] or \(\dfrac{1.1}{2.6} \times 500\) or [211, 212] or \(\dfrac{500}{200} \times 1.1(0)\) or 2.75 or \(\dfrac{200}{500} \times 2.6(0)\) or 1.04 | M1dep | oe |
| Packet B and one correct comparable value stated | A1 | eg B and 472 eg B and (£)2.75 |
Additional guidance
| Up to M2 may be awarded for correct work with no answer or incorrect answer, even if this is seen amongst multiple attempts | |
| Working may be in pence | |
| Two correct comparable values found for 100g followed by incorrect units being stated such as 55p \(=\) 1kg and 52p \(=\) 1kg and B | M1M1A1 |
| Alt 1: If comparing, eg cost of 1g of each, there must be enough decimal places to enable a comparison to be made to award the A mark | |
| Alt 1: Just repeating £1.10 and 200g or £2.60 and 500g | M0 |
| Alt 1: Once they have a value from either A or B they may choose to use a value from the difference between the packets for comparison. eg obtains 55p for 100g for packet A £1.50 for 300g (the difference between the two packs) 50p for 100g Packet B | M1 M1 A1 |
| Some examples of commonly seen answers awarded M1M1A1: B and 55 and 52 (cost in p per 100g) B and 0.0055 and 0.0052 (cost in £s per 1g) B and 5.2 and 5.5 (cost of 1kg of each in £) B and 181.8 and 192.3 (mass per £1 for each) B and 2.75 (cost of 500g of bag A) |