Required information Use the following information for the Quick Study below. Trey Monson starts a merchandising business on December 1 and enters into the following three inventory purchases. Also, on December 15, Monson sells 28 units for $25 each. Purchases on December 7 Purchases on December 14 Purchases on December 21 18 units @ $10.00 cost 35 units @ $15.00 cost 28 units @ $18.00 cost QS 6-12 Perpetual: Inventory costing with weighted average LO P1 Required: Monson sells 28 units for $25 each on December 15. Monson uses a perpetual inventory system. 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.) Weighted Average - Perpetual: Goods purchased Inventory Balance # of units Date Cost per unit Cost of Goods Sold # of Cost per Cost of units unit Goods Sold sold Inventory Value # of units Cost per unit Inventory Balance December 7 December 14 Average cost December 15 December 21 Average cost Totals