I can't understand what means more information...related example?

1 Find value of inventroy based on FIFO, LIFO and Average Cost method. Units Sold Date Cost/Unit Total Cost Date 2-Dec 7-Dec 15-Dec 22-Dec 27-Dec Total Units Purchased #Units Cost/Unit 420 $8.00 350 $9.50 200 $10.00 350 $9.00 250 $11.00 1570 N/A Total Cost $3,360.00 $3,325.00 $2,000.00 $3,150.00 $2,750.00 $14,585.00 10 Dec 18-Dec 28-Dec Total Units 570 260 410 1240 N/A N/A Calculating Cost of Goods Sold and fill below table: FIFO LIFO Avg Cost Cost of Goods Purchased Minus Ending Inventory (Value) Cost of Goods Sold Assume that in Dec 2019 Revenue General Expenses $20,000 $1.500 How much is our profit prior to Tax deduction FIFO LIFO Ave Cost W