Required information [The following information applies to the questions displayed below.) Trey Monson starts a merchandising business on December 1 and enters into the following three inventory purchases. Monson uses a periodic inventory system. Also, on December 15, Monson sells 28 units for $25 each. Purchases on December 7 Purchases on December 14 Purchases on December 21 18 units e $10.00 cost 35 units @ $15.00 cost 28 units @ $18.00 cost Determine the costs assigned to ending inventory when costs are assigned based on the weighted average method. (Amounts to be deducted should be indicated with a minus sign. Round cost per units to 2 decimals.) Periodic Weighted Average Inventory on hand Cost of Goods Sold Cost per Inventory of units Avg. Cost per Cost of # of units unit Value sold unit Goods Sold $ 0 0 0 Purchase - December 7 Purchase - December 14 Purchase - December 21 Available for Sale December Sales Total 0 $ 0 0 $ 0