Pina Colada Corp. uses a periodic inventory system. Its records show the following for the month of May, in which 79 units were sold. Date May 1 Explanation Inventory Purchase Units Unit Cost Total Cost $270 250 CLEA Purchase Total 100 495 $1,015 Calculate the weighted-average unit cost. (Round answer to 3 decimal places, e.g. 5.125.) Weighted-average unit cost eTextbook and Media AVERAGE-COST Calculate the ending inventory at May 31 using the FIFO, LIFO and average-cost methods. (Round answers to O decimal places, e.g. 125.) The ending inventory at May 31 A FIFO +A LIFO A