Please do not use excel Your uncle has $280,000 invested at 7.5%, and he now wants to retire. He wants to withdraw $35,000 at the end of each year, starting at the end of this year. He also wants to...

Please do not use excel

Your uncle has $280,000 invested at 7.5%, and he now wants to retire.  He wants to withdraw $35,000 at the end of each year, starting at the end of this year.  He also wants to have $25,000 left to give you when he ceases to withdraw funds from the account.  For how many years can he make the $35,000 withdrawals and still have $25,000 left in the end?