Carla Vista Co. uses a periodic inventory system. Its records show the following for the month of May, in which 70 units were sold. Date Explanation Units Unit Cost Total Cost May 1 Inventory 37 $8 $296 15 Purchase 24 9 216 24 Purchase 39 10 390 Total 100 $902 Calculate the weighted-average unit cost. (Round answer to 3 decimal places, e. g. 5.125.) Weighted-average unit cost $Enter the Weighted-average unit cost in dollars rounded to 3 decimal places eTextbook and Media Calculate the ending inventory at May 31 using the FIFO, LIFO and average-cost methods. (Round answers to 0 decimal places, e. g. 125.)