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 29 units for $50 each, Purchases on December 7 19 units $20.00 cost Purchases on December 14 36 units @ $30.00 cost Purchases on December 21 29 units $36.00 cost Determine the costs assigned to ending inventory when costs are assigned based on the weighted average method. (Round your per unit costs to 2 decimal places.) Date Weighted Average - Perpetual Goods purchased Cost of Goods Sold # of # of units Cost per unit Inventory Value units Cost per Cost of Goods sold unit Sold 19 at $ 20.00 - $ 380.00 Inventory Balance # of units Cost per unit Inventory Balance 19 at $ 20.00 = 5 380.00 December 7 36) at $ 30.00 $ December 14 1.000.00 $ 20.00 = 30.00 $ 19 at 36 at 55 at 26 at $ 380.00 1,080.00 $ 1,460.00 Average cost December 14 December 15 29 at $ 0.00 $ 0.00 26 December 21 26 at Average cost December 21 Totals $ 0.00