Higher November 2017 Paper 1 Q11
11 3 teas and 2 coffees have a total cost of £7.80
5 teas and 4 coffees have a total cost of £14.20
Work out the cost of one tea and the cost of one coffee. (4)
| Answer | Mark | Notes |
|---|---|---|
| Tea £1.40 Coffee £1.80 | P1 | for setting up two appropriate equations eg \(3t + 2c = 7.80\), \(5t + 4c = 14.20\) |
| M1 | for method to eliminate one variable, condone one arithmetic error | |
| M1 | for method to substitute found variable or start again | |
| A1 | Tea £1.4(0) and Coffee £1.8(0) with amounts linked to correct drinks |