Dana invests £8000 for 4 years in a savings account. She gets 20% per annum compound interest in the first year, then x% x\%\,x% for 3 years.
Dana has £10338.15 at the end of 4 years, work out the value of xxx.
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.