In its first month of operations, Sheffield Corp. made three purchases of merchandise in the following sequence: (1) 155 units at $8, (2) 600 units at $9, and (3)105 units at $10. (a1) Your answer is correct. Calculate the weighted-average unit cost. (Round answer to 3 decimal places, e.g. 15.225.) Weighted-average unit cost $ eTextbook and Media Attempts: 1 of 3 used (a) Assuming there are 300 units on hand, compute the cost of the ending inventory under the average-cost method. (Round answer to O decimal places, e.g. 1,250.) The cost of the ending inventory $