Ishan and hazel plan to retire at age 60 with a retirement income of $48,000 a year from their savings. rather than pay themselves the whole amount at the beginning of each year, they have decided that payment at the beginning of each quarter of $12,000 gives them the right balance of flexibility and maximized interest earnings. they feel they can safely earn an interest rate of 6.5%, compounded quarterly, on their money and they are budgeting based on the prediction that they will live until they are 90 years old.