A drink costs x pence
A cake costs 7 pence more than a drink
The total cost of two drinks and a cake is 97 pence
Form an equation in x and solve it to find the cost of a cake
2x + x + 7 = 97 Simplify: 3x + 7 = 97 Subtract 7 from both sides: 97 - 7 = 90 3x = 90 Divide both sides by 3 90/3 = 30 The cost of one drink is 30 pence.
