Find the average daily balance, with new purchases included. Dates
Payment
Purchase
End-of-Day Balance
x
# of days
Sum of Balances
9/6-9/17

$600
x

9/18

$140
740
x

9/19-9/24

x

9/25
$120

x

9/26-10/5

x

TOTAL

Sum of Daily Balances
➗
# of days
=
Average Daily Balance

➗

=