Aircard Corporation tracks the number of units purchased and sold throughout each accounting period but applies its inventory costing method at the end of each period as if it uses a periodic inventory system. The following are the transactions for the month of July. Units Unit Cost July 1 July 5 July 13 Beginning Inventory 2,000 $40 Sold 1,000 July 17 July 25 July 27 Purchased Sold Purchased Sold 6,000 44 3,000 8,000 46 5,000 Calculate the cost of goods available for sale, ending inventory, and cost of goods sold if Aircard uses (a) FIFO, (b) LIFO, or (c) weighted average cost. (Round "Cost per Unit" to 2 decimal places.) FIFO LIFO Weighted Average Cost Cost of Goods Available for Sale Ending Inventory Cost of Goods Sold A machine that cost $240,000 has an estimated residual value of $24,000 and an estimated useful life of four years. The company uses double-declining-balance depreciation. Calculate its book value at the end of year 3. (Do not round intermediate calculations.) Book Value Complete the following table by computing the missing amounts for the following independent cases. (Do not round intermediate calculations. Round "Annual Interest Rate" to 1 decimal place.) Principal Amount on Note Annual Interest Rate Time Period Interest Earned Receivable a. $ 90,000 b. $ 48,000 C. 10.4 % % 9.8 % 6 months 9 months $ 3,168 12 months $ 3,724