In its first month of operations, Metlock, Inc. made three purchases of merchandise in the following sequence: (1) 380 units at $6, (2) 480 units at $8, and (3) 580 units at $9. Calculate average unit cost. (Round answer to 3 decimal places, eg. 5.125.) Average unit cost $ Compute the cost of the ending inventory under the average-cost method, assuming there are 280 units on hand at the end of the period. (Round answer to decimal places, e.g. 125.) The cost of the ending inventory ta $