In its first month of operations, Concord Company made three purchases of merchandise in the following sequence: (1) 320 units at $7, (2) 430 units at $8, and (3) 250 units at $9. (a) Calculate the average unit cost. (Round answer to 2 decimal places, e.g. 15.25.) Average unit cost $ Compute the cost of the ending inventory under the average-cost method, assuming there are 400 units on hand. (Round answer to O decimal places, e.g. 1,250.) The cost of the ending inventory $