Your parents purchase a computer for $1,257.00 plus 6% sales tax. They decide to finance it through the store’s 0% program for 6
months. The terms state that they pay nothing until the 6 months are over. When they receive the bill, they forget to pay it and are assessed a late fee of $45.00 plus the interest accrued to that point at a 16.75% APR. How much interest will they be charged? $182.39 $223.18 $116.32 $111.59
The total amount of the purchase was the cost of the computer plus the sales tax:
$1,257*1,06= $1,332.42
Now, to determine the interest that they will have to pay, you have to consider that the interest rate is 16,75% APR that is the annual percentage rate but as only 6 month have passed, the interest rate at this point that they have to pay is 8.375%: