Tony is offering two repayment plans to Phil for a long overdue loan. offer one is receive a visit from and enforce and the debt is due in full at once. Offer 2 is to pay back $3,600 at the end of the year at an interest rate of 21% u til Phil pays off the loan principal. Phil Owens Tont $15,000. How long will it take for Phil to pay off the loan if he takes offer 2?