Mason wants to buy k k\,k pens.
Each pen costs 28p
Mason pays with a £10 note.
Work out how much change Mason will get from £10, in terms of kkk.
When in the shop Mason finds out that the price of the pens has been reduced.
How does this affect the amount of change he will get?
218 exam-style questions on OCR GCSE Maths Calculation Problems. Each one has a worked solution and a mark scheme showing where the marks go.