posted by Dena .
Nancy Tai has recently opened a revolving charge account with MasterCard. Her credit limit is $1000, but she has not charged that much since opening the account. Nancy hasn't had the time to review her monthly statements as promptly as she should, but over the upcoming weekend, she plans to catch up on her work.
In reviewing November's statement, she notices that her beginning balance was $600 and that she made a $200 payment on November 10. She also charged purchases of $80 on November 5, $100 on November 15, and $50 on November 30. She can't tell how much interest she paid in November because she spilled watercolor paint on that portion of the statement. She does remember, though, seeing the letters APR and the number 18%. Also, the back of her statement indicates that interest was charged using the average daily balance method including current purchases, which considers the day of a charge or credit.
Assuming a 30-day period in November, calculate November's interest using the average daily balance method. Also, calculate the interest Nancy would have paid using the previous balance method.
I AM NOT ABLE TO DO YHIS PART "How long will it take Nancy to pay a balance of $10,000 if she only makes Minimum Monthly Payment which is 2% of the outstanding balance, APR is 18%."