Buffalo Industries reports the following for the month of June. Date Explanation Units Unit Cost Total Cost June 1 Inventory 131 $5 $655 12 Purchases 359 6 2,154 23 Purchases 195 7 1,365 30 Inventory 267 A sale of 371 units occurred on June 15 for a selling price of $8 and a sale of 47 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 $ June 27 $