Question 3: (4 marks) A company made the following merchandise purchases and sales during the month of May. The company is using the perpetual inventory system. Date Explanation Units available Unit Cost Total Cost for sale May 1 Purchase 380 $ 15 $ 5,700 May 5 Purchase 270 $ 17 $4,590 May 10 Sale 450 $ 20 $ 9,000 May 20 Puchase 300 $ 22 $ 6,600 May 25 Sale 320 $ 24 $ 7,680 May 31 Purchase 200 $18 $ 3,600 Instructions 1. Show computations to value the ending inventory and the cost of goods sold using the FIFO method. 2. Show computations to value the ending inventory and the cost of goods sold using the LIFO method. 3. Show computations to value the ending inventory and the cost of goods sold using the weighted average method.