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 Purchases on December 14 Purchases on December 21 19 units @ $20.00 cost 36 units @ $30.00 cost 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.) Inventory Balance Weighted Average - Perpetual: Goods purchased # of Cost per Inventory Date units unit Value Cost of Goods Sold #of Cost of units unit Goods Sold sold Cost per Cost per of units Inventory Balance unit December 7 December 14 Average cost December 15 December 21 Average cost Totals