Problem 5-1B Perpetual: Alternative cost flows P1 Ming Company uses a perpetual inventory system. It entered into the following purchases and sales transactions for April. (For specific identification, units sold consist of 20 units from beginning inventory, 30 units from the April 6 purchase, and 10 units from the April 25 purchase.) Date Activities Units Acquired at Cost Units Sold Apr. 1 Beginning 20 units @ $3,000 per unit inventory Apr. 6 Purchase 30 units @ $3,500 per unit Apr. 9 Sales 35 units @ $12 Apr. 17 Purchase 5 units @ $4,500 per unit Apr. 25 Purchase 10 units @ $4,800 per unit Apr. 30 Sales 25 units @ $14 Total 65 units units Table Summary: In table, rows 3 and 5 of column 3 are blank; rows 1, 3, 4, and 6 of column Column 3 of row 7 has two cells with data. Required 1. Compute cost of goods available for sale and the number of units available for sale. 2. Compute the number of units in ending inventory. 3. Compute the cost assigned to ending inventory using (a) FIFO, (6) LIFO, (c) weighted average, and (d) specific identification. (Round all amounts to cents.) 1. Compute gross profit earned by the company for each of the four costing methods in part 3