Just need help with these two

Scoresby Inc. 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. Units 1,500 Unit Cost $30 Transactions a. Inventory, Beginning For the year: b. Purchase, March 5 c. Purchase, September 19 d. Sale, April 15 (sold for $75 per unit) e. Sale, October 31 (sold for $78 per unit) f. Operating expenses (excluding income tax expense), $393,000 31 33 7,500 3,500 2,100 6,500 Required: 3. Compute the cost of ending inventory and cost of goods sold under (a) FIFO, (b) LIFO, and (c) weighted average cost. 4. Prepare an income statement that shows the FIFO method, LIFO method and weighted average method