Current Attempt in Progress Monty Corp. uses a periodic inventory system. Its records show the following for the month of May, in which 74 units were sold. Date May 1 15 24 Explanation Inventory Purchase Purchase Total Units 36 24 40 100 Unit Cost $8 9 10 Total Cost $288 216 400 $904 Calculate the weighted average unit cost. (Round answer to 3 decimal places, eg. 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 decimal places, eg. 125.) FIFO LIFO AVERAGE-COST The ending inventory at May 31 $ $ $