Date Explanation Units Unit Cost Total Cost May 1 Inventory 30 $9 $270 15 Purchase 21 10 210 24 Purchase 39 11 429 Total 90 $909 (a) Your answer is correct. Calculate the weighted average unit cost. (Round answer to 3 decimal places, e3.5.125.) Weighted average unit cost $ 10.100 e Textbook and Media Attempts: 1 of 3 used (b) Calculate the ending inventory at May 31 using the FIFO, LIFO and average-cost methods. (Round answers to decimal places es: 125) FIFO LIFO AVERAGE-COST S $ The ending inventory at May 31 Flounder Corp. uses a periodic inventory system. Its records show the following for the month of May, in which 73 units were sold. Date Explanation Units Unit Cost Total Cost May 1 Inventory 30 $9 $270 15 Purchase 21 10 210 24 Purchase 39 11 429 Total 90 $909 (a) Your answer is correct. Calculate the weighted-average unit cost. (Round answer to 3 decimal places, eg. 5.125) Weighted-average unit cost $ 10.100