14) On October 1, the unpaid balance in an account was $185. No payments were made that month. The interest rate per month was 1.75% per month of the average daily balance. Find the finance charge for the month of October.
The interest rate is already given as a per month rate, so no need to divide the interest rate by 12. The average balance for October is $185--that was the beginning and ending balance. (beg + end)/2. That times 1.75% gives $3.24. Next month, if no more payments are made, the interest would be higher because the interest from October would be capitalized (compound interest--interest on interest).
Apr 25th, 2015
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