Two different packs of the same biscuits are available in a shop.
Pack A contains 12 biscuits and costs £1.44 £1.44\,£1.44
Pack B contains 20 biscuits and costs £2.50 £2.50\,£2.50
Work out which pack offers the best value for money. You must show your working.
84 exam-style questions on WJEC GCSE Maths Best Buy Questions. Each one has a worked solution and a mark scheme showing where the marks go.