A farm shop sells boxes of eggs in two sizes.
6 eggs for £1.38£1.38£1.38
15 eggs for £3.30 £3.30\,£3.30
Work out which box 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.