i cant seem to figure either of these out. please answer with an explenation also.

i also tried

a: 39.58

b: 37.82

and those are not right either

Your Christmas ski vacation was great, but it unfortunately ran a bit over budget. All is not lost: You just received an offer in the mail to transfer your $12,900 balance from your current credit card, which charges an annual rate of 20.7 percent, to a new credit card charging a rate of 11.3 percent. a. How much faster could you pay the loan off by making your planned monthly payments of $270 with the new card? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.) b. What if there was a fee of 2 percent charged on any balances transferred? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.)