Marlow Company uses a perpetual inventory system. It entered into the following calendar-year 2011 purchases and sales transactions. Units Sold at Retail Units Acquired at Cost 740 units @ $46.80/unit 340 units @ $42.80/unit 170 units @ $22.80/unit Date Activities Jan. 1 Beginning inventory Feb. 10 Purchase Mar. 13 Purchase Mar. 15 Sales Aug. 21 Purchase Sept. 5 Purchase Sept. 10 Sales 610 units @ $77.80/unit 300 units @ $62.80/unit 210 units @ $50.80/unit 130 units @ $77.80/unit Totals 1,760 units 740 units Required: 1. Compute cost of goods available for sale and the number of units available for sale. (Omit the "$" sign in your response.) Cost of goods available for sale Number of units available for sale 2. Compute the number of units in ending inventory. Ending inventory units 3. Compute the cost assigned to ending inventory using (a) FIFO, (b) specific identification-units sold consist of 570 units from beginning inventory and 170 units from the March 13 purchase, and (c) weighted average cost. (Due to rounding, the sum of Cost of Goods Sold and Ending inventory may not equal the Cost of Good available for sales. Round your per unit costs to 2 decimal places. Round your final answers to the nearest dollar amount. Omit the "$" sign in your response.) Ending inventory (a) FIFO (b) Specific identification (c) Weighted average cost 4. Compute gross profit earned by the company for each of the three costing methods. (Round your per unit costs to 2 decimal places and inventory balances and final answer to the nearest dollar amount.Omit the "S" sign in your response.) Gross profit (a) FIFO (b) Specific identification (c) Weighted average cost 090909