Calculate COGS and Ending Inventory using FIFO, LIFO, and Average Cost methods using the perpetual method.

Units Cost per unit Total cost Beg. Inventory 26 $97 $2,522 Purchase 45 $100 $4,500 Sold 15 Purchase 20 $104 $2,080 Purchase 50 $105 $5,250 Sold 60 Purchase 30 $108 $3,240 Sold 50