Final answer:
To calculate Calvin's starting balance next month, you need to calculate the average daily balance for the billing cycle and apply the finance charges. The correct answer is $625.91.
Step-by-step explanation:
To calculate Calvin's starting balance next month, we need to calculate the average daily balance for the billing cycle and then apply the finance charges. Here is the step-by-step calculation:
- Calculate the number of days for each transaction: Beginning Balance (30 days), Purchase on 9/7 (24 days), Purchase on 9/12 (19 days), Payment on 9/20 (11 days).
- Calculate the daily balance for each transaction by multiplying the amount by the number of days: Beginning Balance ($716.54 x 30), Purchase on 9/7 ($84.94 x 24), Purchase on 9/12 ($15.69 x 19), Payment on 9/20 ($200.00 x 11).
- Add up the daily balances for all transactions: Beginning Balance + Purchase on 9/7 + Purchase on 9/12 - Payment on 9/20.
- Divide the total daily balance by the number of days in the billing cycle: Total Daily Balance / 30.
- Apply the APR to the average daily balance to calculate the finance charges: Average Daily Balance x (APR / 365) x Number of Days in the billing cycle.
- Finally, subtract the finance charges from the average daily balance to get the starting balance next month.
Based on the provided information, the correct answer is
$625.91
as option C.