Phil invests £600 \pounds 600\,£600 for 4 years in a bank account. The account pays simple interest. At the end of 4 years Phil has received a total amount of £72 \pounds 72\,£72 interest. Work out the rate of interest per year.
199 exam-style questions on Eduqas GCSE Maths Percentages. Each one has a worked solution and a mark scheme showing where the marks go.