You are planning to save for retirement over the next 25 years. To do this, you will invest

$7,000 a month in a stock account and $3,000 a month in a bond account. The return on

the stock account is expected to be 7.5%, and the bond account will pay 4.5%. When you

retire, you will combine your money into an account with a 3% return. How much can you

withdraw each month during retirement assuming a 20-year withdrawal period?

please do not use excel formula