Shasta Company sold 6,850 units of its product at $63 per unit in year 2011 and incurred operating expenses of $5 per unit in selling the units. It began the year with 1,100 units in inventory and made successive purchases of its product as follows.

Required
1. Prepare comparative income statements similar to Exhibit 5.8 for the three inventory costing methods of FIFO, LIFO, and weighted average. (Round per unit costs to three decimals, but inventory balances to the dollar.) Include a detailed cost of goods sold section as part of each statement. The company uses a periodic inventory system, and its income tax rate is 30%.
2. How would the financial results from using the three alternative inventory costing methods change if the company had been experiencing decreasing prices in its purchases of inventory?
3. What advantages and disadvantages are offered by using?
(a) LIFO
(b) FIFO?
Assume the continuing trend of increasing costs.

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Jan. Beginning inventory1 April 2 Purchase June 14 Purchase .. .250 units @ $25 per unit Aug. 29 Purchase ,200 units $27 per unit Nov. 18 Purchase .. 1,100 units @ $23 per unid 2,100 units @ $24 per unit 2250 units @ $29 per unit 7,900 units Total..