how long will it take for him to pay off the credit card assuming that he makes no additional charges?

Multiple Choice

$11\mathrm{.}42$ months

Thom owes $$7,400$ on his credit card. The credit card carries an APR of $18\mathrm{.}5$ percent compounded monthly. If Thom makes payments of $$230$ per month, how long will it take for him to pay off the credit card assuming that he makes no additional charges?

Multiple Choice