Alex invests some money for 3 years in a savings account. She gets 4% per annum compound interest.
Alex has £5624.32 at the end of 3 years, work out how much she invested.
Hence, work out how much interest she earns over the 3 years.
208 exam-style questions on Eduqas GCSE Maths Repeated Percentage Change. Each one has a worked solution and a mark scheme showing where the marks go.