A brand of shampoo is available in two different bottles.
900 ml for £5.40£5.40£5.40
400 ml for £2.00 £2.00\,£2.00
Work out which bottle offers the best value for money.
You must show your working.
84 exam-style questions on Eduqas GCSE Maths Best Buy Questions. Each one has a worked solution and a mark scheme showing where the marks go.