credit card

[logistic_guy]

Suppose you owe $\displaystyle \$8,502.25$ on a credit card. Realizing that this is not a good thing, you vow to make no more charges to the card and work hard to pay the balance off. The interest rate is $\displaystyle 18.75\%$. How long will it take to pay off this balance assuming you pay

(a) $\displaystyle \$125$ per month,
(b) $\displaystyle \$250$ per month,
(c) $\displaystyle \$500$ per month?

 

[khansaheb]

show us your effort/s to solve this problem.