Current Attempt in Progress Cullumber Company uses a periodic inventory system and reports the following for the month of June. Date Explanation Units Unit Cost Total Cost June 1 Inventory 130 $ 5 $ 650 12 Purchases 388 6 2,328 23 Purchases 215 7 1,505 30 Inventory 230 Your answer is incorrect. Calculate weighted-average unit cost. (Round answer to 3 decimal places, e.g. 5.125.) Weighted average unit cost $ $ 6.12