In: Accounting
credit card payments: The outstanding balance on Bill’s credit card account is $3200. The bank issuing the credit card is charging 9.3%/year compounded monthly. If Bill de cides to pay off this balance in equal monthly installments at the end of each month for the next 18 months, how much will be his monthly payment? What is the effective rate of interest the bank is charging Bill?
Amount in $ | ||||||||||||
Outstanding balance on Bill's credit card | 3200 | |||||||||||
Interest charges is 9.3 % per year compounded monthly | ||||||||||||
The total amount after 18 months including the compound interest per month | ||||||||||||
formula, A = P (1 + r/n) (nt) | ||||||||||||
where | In the present scenario | |||||||||||
A = the future value of the investment/loan, including interest | have to calculate here | |||||||||||
P = the principal investment amount (the initial deposit or loan amount) | 3200 | |||||||||||
r = the annual interest rate (decimal) | 9.3% = 0.093 | |||||||||||
n = the number of times that interest is compounded per year | 12 | |||||||||||
t = the number of years the money is invested or borrowed for | 18 months = 1.5 years | |||||||||||
therefore , A = 3200 (1+0.093/12)(12*1.5) | ||||||||||||
3677.06 | ||||||||||||
Monthly installment payment = 3677.06 /18 | 204.281 | |||||||||||
Effective rate of interest the bank is charging Bill = ( $ 3677.06 - $3200) / $3200 % | ||||||||||||
14.9081 | % | |||||||||||