View Policies Current Attempt in Progress Marin Inc. uses a periodic inventory system. Its records show the following for the month of May, in which 74 units were sold. Date Explanation Units Unit Cost 35 May 1 15 Inventory Purchase Total Cost $350 275 24 Purchase 480 $1,105 Total Calculate the weighted average unit cost. (Round answer to 3 decimal places, s. 5.125.) Weighted average unit cost $ eTextbook and Media Calculate the ending inventory at May 31 using the FIFO, LIFO and average-cost methods. (Round answers to O decimal places, s. 125.) FIFO LIFO AVERAGE-COST The ending inventory at May 31 $