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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 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.) 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. Required: Monson sells 27 units for $40 each on December 15 . Of the units sold, 14 are from the December 7 purchase and 13 are from the December 14 purchase. Monson uses a perpetual inventory system. Determine the costs assigned to the December 31 ending inventory when costs are assigned based on specific identification