Warnerwoods Company uses a perpetual inventory system. It entered into the following purchases and sales transactions for March. Date March 1 March 5 Sales Activities Beginning inventory 130 units Purchase March 9 March 18 Purchase March 25 Purchase March 29 Sales Totals Units Acquired at Cost @$51.60 per unit 240 units @ $56.60 per unit 100 units @ $61.60 per unit 180 units @ $63.60 per unit Units Sold at Retail 290 units @$86.60 per unit 650 units 160 units @ $96.60 per unit 450 units Problem 6-1A (Algo) Part 4 4. Compute gross profit earned by the company for each of the four costing methods. For specific identification, units sold include 80 units from beginning inventory, 210 units from the March 5 purchase, 60 units from the March 18 purchase, and 100 units from the March 25 purchase. Note: Round weighted average cost per unit to two decimals and final answers to nearest whole dollar. Gross Margin FIFO LIFO Weighted Average Specific ID Sales Less Cost of goods sold Gross profit