Culver Corporation uses a periodic inventory system reports the following for the month of June. Unit Cost Date June 1 Units 120 Explanation Inventory Purchases Purchases Inventory Total Cost $600 2,280 1,470 12 23 30 A sale of 400 units occurred on June 15 for a selling price of $8 and a sale of 40 units on June 27 for $9. Calculate the average cost per unit, using a perpetual inventory system. (Round answers to 3 decimal places, e.g. 5.125.) June 1 June 12 June 15 June 23 dy June 27