Suppose you owe a credit card company $7,500 and you can afford to pay $235 per month. The card charges you 21% per year. How long will it take to pay off the credit card? Show work: Spreadsheet Answer A machinery dealer will allow you to pay off your $140,000 machinery loan in 5 equal yearly payments (end of the year) of $33,300 each. What interest rate are they charging? No algebraic solution Spreadsheet Answet