Calculate (A)the Average Daily Balance and (B)the Finance Charge, If

Short Answer

Calculate (A)the average daily balance and (B)the finance charge, if finance charge is 1% on the average daily balance.
$\begin{array}{l}30 \text { Day Billing Cycle }\\\begin{array} { l l r } 4 / 20 & \text { Prev Balance } & \$ 800 \\4 / 27 & \text { Payment } & \$ 100 \\4 / 30 & \text { Charge } & \$ 300 \\5 / 9 & \text { Payment } & \$ 50 \\5 / 12 & \text { Cash Adv } & \$ 200\end{array}\end{array}$