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 30 units for $25 each. QS 5-12 Perpetual: Inventory costing with welghted average LO P1 Required: Monson sells 30 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.) Required: Monson sells 30 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.)