A shop sells bottles of water in two different pack sizes.
12 bottles for £4.56£4.56£4.56
8 bottles for £3.12 £3.12\,£3.12
Work out which pack offers the best value for money. You must show your working.
24 exam-style questions on Edexcel GCSE Maths Best Buy Questions. Each one has a worked solution and a mark scheme showing where the marks go.