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 selis 15 units for $33 each. Purchases on Decenber ? Purchases on Decenber 7 , 10 units e $19.00 cost QS 5-12 (Algo) Perpetual: Inventory costing with LIFO LO P1 Determine the costs assigned to ending inventory when costs are assigned based on the LIFO method