Purchases on December 20 units @ $10.00 cost Purchases on December 36 units @ $15.00 cost 14 Purchases on December 30 units @ $18.00 cost 21 QS 5-11 Perpetual: Inventory costing with LIFO LO P1 Required: Monson sells 30 units for $25 each on December 15. Monson uses a perpetual inventory system. Determine the costs assig December 31 ending inventory when costs are assigned based on LIFO. Perpetual LIFO: Goods purchased Cost of Goods Sold Inventory Balance Date # of units Cost Per Unit Cost of Goods #of Available for units Sale sold Cost Per Cost of Goods Unit Sold # of units Cost per unit Inventory Balance December 7 December 14 December 15