In its first month of operations, Waterway Industries made three purchases of merchandise in the following sequence: (1) 350 units at $6, (2) 400 units at $8, and (3) 500 units at $9. Calculate average unit cost. (Round answer to 3 decimal places, e.g. 5.125.) $ Average unit cost eTextbook and Media List of Accounts Compute the cost of the ending inventory under the average-cost method, assuming there are 250 units on hand at the end of the period. (Round answer to O decimal places, e.g. 125.) $ The cost of the ending inventory