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Required information Trey Monson starts a merchandising business on December 1 and enters into the following three inventory purchases. Also, on December 15, Monson sells 18 units for $10 each Purchases on December 7 Purchases on December 14 Purchases on December 21 8 units @ $4.00 cost 26 units @ $6.00 cost 18 units @ $7.00 cost Required: Monson sells 18 units for $10 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 Dato Inventory units unit Value December 7 8@ $ 4.00 - $ 32.00 $ December 14 26 @ $ 6.00 = 156.00 Cost of Goods Sold # of Cost per Cost of units sold unit Goods Sold Inventory Balance # of units Cost per Inventory unit Balance 8lar $ 4.00 = 32.00 $ 32.00 + 8@ $ 4.00 = 26 @ $ 6.00 = 34 @ $ 5.53 = Average cost 156.00 $ 188.00 December 15 18 $ 0.00 December 21 18@ $ 7.00 $ 126.00 @ $ 7.00 = @ 0 Average cost