Answer:
The finance charge on the September 10 bill is $5.08.
Explanation:
Note: See the attached excel file for the calculation of the sum of total amount owed each day (in bold red color).
From the attached excel file, we have:
Sum of total amount owed each day = $11,675
Average daily balance = Sum of total amount owed each day / Number of days in the billing period = $11,675 / 31 = $376.61
Finance charge = Average daily balance * Interest rate per month = $376.61 * 1.35% = $5.08
Therefore, the finance charge on the September 10 bill is $5.08.