! Required information [The following information applies to the questions displayed below.] Warnerwoods Company uses a periodic inventory system. It entered into the following purchases and sales transactions for March. Date March 1 Activities March 5 Beginning inventory Purchase March 9 Sales March 18 March 25 March 29 Purchase Purchase Sales Totals 320 units $115 per unit 820 units For specific identification, units sold include 90 units from beginning inventory, 410 units from the March 5 purchase, 120 units from the March 18 purchase, and 200 units from the March 25 purchase. Units Acquired at Cost 180 units $70 per unit 480 units @ $75 per unit 280 units @ $80 per unit 360 units @ $82 per unit 1,300 units Units Sold at Retail 500 units $105 per unit 4. Compute gross profit earned by the company for each of the four costing methods. (Round your average cost per unit to 2 decimal places and final answers to nearest whole dollar.) Sales Less: Cost of goods sold Gross profit FIFO LIFO Weighted Average Specific Identification