1MA0 Foundation June 2016 Paper 2 Q4
4 The table gives information about the cost of calls and the cost of texts for each of two mobile phone networks.
| Telcom | Swish | |
|---|---|---|
| Calls (per minute) | 8p | 3p |
| Texts (each) | 4p | 2p |
Last week Amir
made 30 minutes of calls
and sent 40 texts
Amir used the Telcom network.
If Amir had used the Swish network, the total cost of his calls and texts would have been less.
How much less? (3)
| Working | Answer | Mark | Notes |
|---|---|---|---|
| \(30 \times 8\)p + \(40 \times 4\)p = 400p \(30 \times 3\)p + \(40 \times 2\)p = 170p \(400 - 170 = 230\) OR \((8 - 3) \times 30\) = 150p \((4 - 2) \times 40\) = 80p \(150 + 80 = 230\) | 2.30 | 3 | M1 for a complete method to find the cost for one company M1 for a complete method to find the cost for both companies and finding the difference A1 cao OR M1 for a complete method to find the differences in cost for calls or texts M1 for a complete method to find the amount saved and finding the sum A1 cao SC: B2 for an answer with digits 23 |