Below is a table outlining Betty-Sue’s monthly charges and payments on her credit card for the month of August (31 days):

Date Activity Amount Balance Forward Days (Freq)
August 1 $2,400.00
August 4 Payment $200.00
August 8 Charge $45.33
August 15 Charge $100.00
August 18 Payment $75.00
August 21 Charge $11.82

a. Determine her average daily balance.
b. Suppose her credit card charges 19% APR. Determine the interest accrued this month.

Question

Below is a table outlining Betty-Sue’s monthly charges and payments on her credit card for the month of August (31 days):

Date	Activity	Amount	Balance Forward	Days (Freq)
August 1			$2,400.00	
August 4	Payment	$200.00		
August 8	Charge	$45.33		
August 15	Charge	$100.00		
August 18	Payment	$75.00		
August 21	Charge	$11.82		

a.	Determine her average daily balance.
b.	Suppose her credit card charges 19% APR. Determine the interest accrued this month.