Calculate the ending inventory please

Grouper Corp. uses a periodic inventory system. Its records show the following for the month of May, in which 68 units were sold. Date Explanation Units Unit Cost Total Cost May 1 Inventory 36 $9 $324 15 Purchase 22 10 220 24 Purchase 42 11 462 Total 100 $1.006 (a) Your answer is correct. Calculate the weighted average unit cost. (Round answer to 3 decimal places, eg, 5.125.) Weighted average unit cost 10050 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