Three packs of tea bags are available in the supermarket
Pack A 240 tea bags for £5£5£5
Pack B 200 tea bags for £4£4£4
Pack C 160 tea bags for £k £k\,£k
Which pack offers the best value for money? Give your answer in terms of kkk, where k>0k>0k>0.
84 exam-style questions on OCR GCSE Maths Best Buy Questions. Each one has a worked solution and a mark scheme showing where the marks go.