Sandhill Co.uses a periodic inventory system. Its records show the following for the month of May, in which 79 units were sold. Date Explanation May 1 Inventory Units 34 26 40 Unit Cost $8 9 10 Total Cost $272 234 400 Purchase Purchase 1 24 Total $906 Your answer is correct. Calculate the weighted average unit cost. (Round answer to 3 decimal places, e.g. 5.125.) Weighted average unit cost $ 9.06 e Textbook and Media X Your answer is incorrect. Calculate the ending inventory at May 31 using the FIFO, LIFO and average-cost methods. (Round answers to O decimal places, e.g. 125.) FIFO LIFO AVERAGE-COST The ending inventory at May 31 $ 250 200 226