Nanuk has a savings account which gathers compound interest each year. He opened the account with a deposit of £2000. After 4 years there is £2545.10 in the account. Work out the annual interest rate of the savings account. Give your answer as a percentage to 1 d.p. Nanuk has a savings account which gathers compound interest each year . He opened the account with a deposit of £ 2000 . After 4 years there is £ 2545.10 in the account . Work out the annual interest rate of the savings account . Give your answer as a percentage to 1 d.p.