Cullumber Company uses a periodic imventory system and reports the following for the month of June: Calculate weighted-average unit cost. (Round answer to 3 decimal places, e.s. 5.125.) Weighted-average unit cost $ Compute the cost of the ending inventory and the cost of goods sold under FIFO, LIFO, and average-cost. (Round answers to 0 decimal places, e.g. 125.)