March 5 March 9 Activities Beginning inventory Purchase 110 units Warnerwoods Company uses a perpetual inventory system. It entered into the following purchases and sales transactions for March. Date March 1 Units Acquired at Cost Units Sold at Retail $51.20 per unit 230 units $56.20 per unit Sales 270 units $86.20 per unit March 18 March 25 March 29 Purchase Purchase Sales Totals 90 units 160 units 590 units $61.20 per unit @$63.20 per unit 140 units $96.20 per unit 410 units 4. Compute gross profit earned by the company for each of the four costing methods. For specific identification, units sold include 70 units from beginning inventory, 200 units from the March 5 purchase, 50 units from the March 18 purchase, and 90 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 imale and fi FIFO LIFO Weighted Average Specific ID