Trey Monson starts a merchandising business on December 1 and enters into the following three inventory purchases Also, on December 15, Monson sells 27 units for $40 each. Purchases on December 7 Purchases on December 14 Purchases on December 21 17 units @ $16.00 cost 33 units $24.00 cost 27 units $29.00 cost Required: Monson sells 27 units for $40 each on December 15. Monson uses a perpetual inventory system. 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.) Weighted Average - Perpetual Goods purchased # of Cost per Date Inventory units unit Value Inventory Balance Cost of Goods Sold Cost per Cost of sold of Inventory unit Goods Sold of units cost per Balance December 7 $ 0.00 December 14 $ 0.00 Average cost s 0.00 December 15 December 21 $ 0.00 Average cost Total 0.00