Homework B Isaiah Co. sells roller blades, model IX, that are popular with youth Information relating to Isaiah's purchases of model IX during Novemberm Isaiah Co. uses a perpetual inventory system. Date Explanation Units Unit cost Total Costs Nov.1 Beginning Inventory 25 Nov.12 Purchases Nov15 Sales Nov.24 Purchases Nov.25 Purchase Nov.30 Sales 228228 $1,100 $27,500 20 1,000 20,000 30 20 1,040 20,800 25 1,050 26,250 50 Instructions: Compute the costs of goods sold and the ending inventory using FIFO and Weighted Average methods on November 30.