I need help completing question 3 and 4. For question 3 I need help with FIFO, LIFO, Weighted Average, and Specific Identification.

Perpetual Perpetual Weighted Specific FIFO LIFO Average Id Compute the cost assigned to ending inventory using specific identification. For specific identification, units sold consist of 540 units from beginning inventory, 360 from the February 10 purchase, 100 from the March 13 purchase, 120 from the August 21 purchase, and 225 from the September 5 purchase. (Round your average cost per unit to 2 decimal places.) Show less Specific Identification: Goods Purchased Cost of Goods Sold Inventory Balance Cost of units per Cost per unit | Goods Sold | # of units Cost Inventory unit 55.0029,700.00 #of units Cost of Date unit sold January 1 540@ February 10 55.00 March 13 March 15 Aug 21 Sep 5 Sep 10 Totals $ 0.00 Weighted Average Specific ld Montoure Company uses a perpetual inventory system. It entered into the following calendar-year purchases and sales transactions Activities Units Acquired at Cost 540 units $55 per unit 460 units $53 per unit 100 units $40 per unit Units Sold at Retail Date Jan. 1 Beginning inventory Feb. 10 Purchase Mar. 13 Purchase Mar. 15 Sales Aug. 21 Purchase Sept. 5 Purchase Sept. 10 Sales 745 units $80 per unit 170 unitse $61 per unit 430 units $54 per unit 600 unitse $80 per unit 1,345 units Totals 1,700 units Perpetual Perpetual Weighted Specific FIFO LIFOAverage Id Compute the cost assigned to ending inventory using FIFO. (Round your average cost per unit to 2 decimal places.) Perpetual FIFO Goods Purchased Cost of Goods Sold Inventory Balance Cost | # of units per per unit sold Cost #of units ost Inventory per Cost of Date Balance unit | Goods Sold |# of units unit Jan 1 500 29,700.00 Feb 10 Mar 13 Mar 15 Aug 21 17061.00 61.00 Sept 5 430 54.00 61.00 54.00 Sept 10 4. Compute gross profit earned by the company for each of the four costing methods. (Round your average cost per unit to 2 decimal places.) Weighted Specific Average Identification FIFO LIFO Sales Less: Cost of oods sold Gross profit 0 $ 0 S