Calculate the weighted-average cost per unit, using a perpetual inventory system. Assume a sale of 400 units occurred on June 15 for a selling price of $9 and a sale of 46 units on June 27 for $10. (Round intermediate calculations to O decimal places, eg. 152 and final answers to 3 decimal places, eg. 5.125.) June 1 June 12 June 15 June 23 June 27 Cullumber Company uses a perpetual inventory system and reports the following for the month of June. Calculate the cost of the ending inventory and the cost of goods sold for each cost flow assumption, using a perpetual inventory system. Assume a sale of 400 units occurred on June 15 for a selling price of $9 and a sale of 46 units on June 27 for $10. (Round answers to 0 decimal places, eg. 125.)