Required information [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. March 5 Activities Beginning inventory Purchase March 9 Sales March 18 March 25 March 29 Purchase Purchase Sales Totals Units Acquired at Cost 120 units @ $51.40 per unit 235 units @ $56.40 per unit 95 units @ $61.40 per unit 170 units @ $63.40 per unit 620 units Units Sold at Retail 280 units @ $86.40 per unit 150 units @ $96.40 per unit 430 units 4. Compute gross profit earned by the company for each of the four costing methods. For specific identification, units sold include 75 units from beginning inventory, 205 units from the March 5 purchase, 55 units from the March 18 purchase, and 95 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 FIFO LIFO Weighted Average Specific ID