please help me out with this question

16 You deposit $20,000 into a savings account that earns 2.500%, and each year for five years you also deposit $5,000. At the end of these five years you stop making deposits and leave the account alone for another ten years, during which time the interest rate paid on the account is 3.500%. What is the ending account value? 17 Your alint Mande naccee away and losue wrenc Va