Required information Trey Monson starts a merchandis ing business on December 1 and enters into three inventory purchases: 20 units $16.00 cost 35 units S24.00 cost 30 units $29.00 cost Purchases on December 7 Purchases on December 14 Purchases on December 21 Required: Monson sells 30 units for $40 each on December 15. Assume the periodic inventory system is used. Determine the costs assigned to ending inventory when costs are assigned based on the LIFO method. (Amounts to be deducted should be indicated with a minus sign. Round cost per units to 2 decimals.) Periodic LIFO: Cost of Goods Available for Sale Cost of Goods Sold Inventory Balance Cost of Goods# of Available for Sale #of units Cost per in ending inventory Cost per unit Ending Cost of per unit Goods Sold Cost #of units units sold Inventory unit Purchases: December 7 December 14 December 21 Total