Number of Units 25 75 40 30 60 50 20 80 40 25 35 Per Unit 1,200 30,000 1,240 2,000 2,000 1,260 2,000 2,000 1,260 2,250 2,250 1,264 2,250 Date Transaction Total Apr. 3 Inventory 8 Purchase 93,000 80,000 60,000 75,600 100,000 40,000 100,800 90,000 56,250 44,240 99,000 11 Sale 30 Sale May 8 Purchase 10 Sale 19 Sale 28 Purchase June 5 Sale 16 Sale 21 Purchase 28 Sale With the information above, ending inventory, COGS and gross profit assuming you are using perpetual inventory and LIFO method