Current Attempt in Progress Crane Inc. uses a periodic inventory system. Its records show the following for the month of May, in which 78 units were sold. Calculate the weighted-average unit cost. (Round answer to 3 decimal places, e.g. 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 0 decimal places, e.g. 125.) eTextbook and Media Attempts: 0 of 3 used