(Annuity number of periods) Youve just bought a new flat-screen TV for $3,600 and the store you bought it from offers to let you finance the entire purchase at an annual rate of 15 percent compounded monthly. If you take the finanoing and make monthly payments of $140, how long will it take to psy off the loan? How much wal you pay in interest over the life of the loan? a. The number of years it will take to pay of the loan is years. (Round to one decimal place.)