a.) In its first month of operations, Bethke Company made three purchases of merchandise in the following sequence: (1) 190 units at $9, (2) 420 units at $10, and (3) 150 units at $11. find the average unit cost

b.)Compute the cost of the ending inventory under the average-cost method, assuming there are 360 units on hand. (Round answer to 0 decimal places, e.g. 1,250.)