how do i calculate sales, cost of goods sold , and gross profit.

wamerwoods Company uses a perpetual inventory system. It entered into the following purchases and salest for March Date Activities Units Acquired at Cost Units sold at Retail Har 1 Beginning inventory 100 units @ 350.00 per unit 5 Purchase 400 units 555.00 per unit 9 Sales 420 units $85.00 per unit Mar. 18 Purchase 120 units 560.00 per unit 200 units 562.00 per unit Mar. 29 Sales 160 units 595.00 per unit Totals 820 units 580 units Har. Mar Mar. 25 Purchase Problem 5-1A Part 4 4. Compute gross profit earned by the company for each of the four costing methods. For specific identification, the consisted of 80 units from beginning inventory and 340 units from the March 5 purchase, the March 29 sale consiste the March 18 purchase and 120 units from the March 25 purchase. (Round weighted average cost per unit to two de FIFO LIFO Avg. Cost Spec.ID Gross Margin Sales Less Cost of goods sold Gross profit