Required information (The following information applies to the questions displayed below) Trey Monson starts a merchandising business on December 1 and enters into the following three Inventory purchases. Monson uses a perpetual inventory system. Also, on December 15, Monson sells 23 units for $30 each. Purchases on December 7 13 units $12.00 cost Purchases on December 14 30 units $18.00 cost Purchases on December 21 23 units $22.00 cost Determine the costs assigned to ending inventory when costs are assigned based on the weighted average method. (Round your per unit costs to 2 decimal places.) Date Weighted Average - Perpetual: Goods purchased Cost of Goods Sold #of Cost per unit Inventory Value units Cost per Cost of Goods sold unit Sold #of units Inventory Balance Cost per unit Inventory Balance # of units December 7 December 14 Average cost December 14 December 15 December 21 Average cost December 21 Totals