Inventory data for Swifty Company are reported as follows. Date Explanation Units Unit Cost Total Cost June 1 Inventory 300 $4 $1,200 12 Purchase 700 5 3,500 23 Purchase 600 6 3,600 30 Inventory 150 Assume a sale of 800 units occurred on June 15 for a selling price of $8 and a sale of 650 units on June 27 for $9.