Date Explanation Units Unit Cost Total Cost June 1 Inventory 120 $ $600 12 Purchases 360 6 2,160 23 Purchases 220 7 1,540 30 Inventory 240 Calculate the average cost per unit, using a perpetual inventory system. Assume a sale of 410 units occurred on June 15 for a selling price of $8 and a sale of 50 units on June 27 for $9. (Round intermediate calculations to O decimal places, e.g. 5.250 and final answer to 3 decimal places, e.g. 5.125.) June 1 $ June 12 $ June 15 $ June 23 $ June 27 $