Montoure Company uses a perpetual inventory system. It entered into the following calendar-year 2013 purchases and sales transactions. Date Activities Units Acquired at Cost Units Sold at Retail Jan. 1 Beginning inventory 630 units @ $ 50 /unit Feb. 10 Purchase 370 units @ $ 46 /unit Mar. 13 Purchase 100 units @ $ 34 /unit Mar. 15 Sales 740 units @ $ 75 /unit Aug. 21 Purchase 160 units @ $ 55 /unit Sept. 5 Purchase 520 units @ $ 51 /unit Sept. 10 Sales 680 units @ $ 75 /unit Totals 1,780 units 1,420 units

Required: 1. Compute cost of goods available for sale and the number of units available for sale. 2. Compute the number of units in ending inventory. 3. Compute the cost assigned to ending inventory using (a) FIFO, (b) LIFO, (c) weighted average, and (d) specific identification. For specific identification units sold consist of 630 units from beginning inventory, 270 from the February 10 purchase, 100 from the March 13 purchase, 110 from the August 21 purchase, and 310 from the September 5 purchase. (Round your average cost per unit to 2 decimal places.) 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.)