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 15 units for $20 each. Purchases on December 7 Purchases on December 14 10 units $ 6 cost Purchases on December 21 20 units $12 cost 15 units @ $14 cost Determine the costs assigned to ending inventory when costs are assigned based on the LIFO method. Perpetual LIFO: Goods purchased Cost of Goods Sold Inventory Balance Date # of units Cost per unit Cost of Goods Available for Sale # of units sold Cost per Cost of Goods Sold unit # of units Cost per unit Inventory Balance 0 $ 6.00