Weighted Average Cost Method with Perpetual Inventory The beginning inventory at Midnight Supplies and data on purchases and sales for a three-month period ending March 31 , are as follows: Weighted Average Cost Method For the three months ended March 31 \begin{tabular}{|c|c|c|c|c|c|c|} \hline \multirow{2}{*}{ Date } & \multicolumn{3}{|c|}{ Purchases } & \multicolumn{3}{|c|}{ Cost of Merchandise Sold } \\ \hline & Quantity & Unit Cost & Total Cost & Quantity & Unit Cost & Total Cost \\ \hline Jan. 1 & & & & & & \\ \hline Jan. 10 & & \& & a & & & \\ \hline Jan,28 & & & & & & s \\ \hline Ian. 30 & & & & & & \\ \hline Feb. 5 & & & & & & \\ \hline Feb: 10 & & & & & & \\ \hline Fab. 16 & & & & & & \\ \hline Feb. 28 & & & & & & \\ \hline Mar: 5 & & & & & & \\ \hline Mac: 14 & & & & & & \\ \hline Mar, 25 & & & & & & \\ \hline Mar. 30 & & & & & & \\ \hline Mar, 31: & Balances & & & & & s \\ \hline \end{tabular} 2. Determine the total sales, the total cost of merchandise sold, and the gross profit from sales for the period. 3. Determine the ending inventory cost as of March 31