I only need help with 3 and 4!

E7-8 (Algo) Analyzing and Interpreting the Financial Statement Effects of Periodic FIFO, LIFO, and Weighted Average Cost (LO 7-3] $ 13 11 14 Orion Iron Corporation tracks the number of units purchased and sold throughout each year but applies its inventory costing method at the end of the year, as if it uses a periodic inventory system. Assume its accounting records provided the following information at the end of the annual accounting period, December 31 Transactions Units Unit Cost a. Inventory, Beginning 300 For the year: b. Purchase, April 11 c. Purchase, June 1 d. Sale, May 1 (sold for $41 per unit) e. Sale, July 3 (sold for $41 per unit) f. Operating expenses (excluding income tax expense), $18,100 Required: 1. Calculate the number and cost of goods available for sale. 2. Calculate the number of units in ending inventory. 3. Compute the cost of ending inventory and cost of goods sold under (a) FIFO, (D) LIFO, and (c) weighted average cost 4. Prepare an income statement that shows under the FIFO method, LIFO method and weighted average method. 6. Which inventory costing method minimizes income taxes? 900 800 300 620 Compute the cost of ending inventory and cost of goods sold under (a) FIFO, (b) LIFO, and (c) weighted average cost. (Do not round intermediate calculations. Round your final answers to the nearest dollar amount.) Cost of Ending Cost of Goods Inventory Sold FIFO LIFO Weighted Average Cost Prepare an Income Statement that shows under the FIFO method, LIFO method and weighted average method. ORION IRON CORPORATION Income Statement For the Year Ended December 31 FIFO LIFO Weighted Average Income from operations