After landing your dream job, you are very excited at the prospect of making $80,000 a year.

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Question:

After landing your dream job, you are very excited at the prospect of making $80,000 a year. You promptly max out your credit card on shopping. Your credit card has the low annual interest rate of 21% compounding monthly.

A) If you have a credit card debt of $24,000 and you make the minimum repayment of $520 a month, how long will it take to repay the credit card company?

B) What is the nominal annual interest rate charged by the credit company?

C) What is the effective annual interest rate charged by the credit company?