Warnerwoods Company uses a periodic inventory system. It entered into the following purchases and sales transactions for March Units Sold at Retail Units Acquired at Cost 110 units @ $45 per unit 410 units @ $50 per unit Date March 1 March 5 March 9 March 18 March 25 March 29 430 units @ $80 per unit Activities Beginning inventory Purchase Sales Purchase Purchase Sales Totals 140 units @ $55 per unit 220 units @ $57 per unit 180 units @ $90 per unit 610 units 880 units For specific identification, units sold include 60 units from beginning inventory, 370 units from the March 5 purchase, 50 units from the March 18 purchase, and 130 units from the March 25 purchase. 4. Compute gross profit earned by the company for each of the four costing methods. (Round your average cost per unit to 2 decim places and final answers to nearest whole dollar.) FIFO LIFO Weighted Average Specific Identification Sales Less: Cost of goods sold Gross profit