Required information. Problem 5-1A (Algo) Perpetual: Alternative cost flows LO P3 [The following information applies to the questions displayed below.) Warnerwoods Company uses a perpetual inventory system. It entered into the following purchases and sales transactions for March. Date March 1 Activities Beginning inventory Purchase Sales Purchase March 5 March 9 March 18 March 25 Purchase March 29 Sales Totals Units Acquired at Cost 160 units @$52.20 per unit 255 units @$57.20 per unit 115 units @ $62.20 per unit 210 units $64.20 per unit 740 units Units Sold at Retail 320 units @ $87.20 per unit 190 units @ $97.20 per unit 510 units Problem 5-1A (Algo) Part 4 4. Compute gross profit earned by the company for each of the four costing methods. For specific identification, units sold include 95 units from beginning inventory, 225 units from the March 5 purchase, 75 units from the March 18 purchase, and 115 units from the March 25 purchase. (Round weighted average cost per unit to two decimals and final answers to nearest whole dollar.) Gross Margin Sales Less: Cost of goods sold Gross profit Weighted. FIFO LIFO Specific ID Average