Sagamore Supplies, an office supply wholesale store, uses a perpetual inventory system. Sagamore recorded the following activity for one of its inventory accounts: Additional information on the purchases and sales is: - All purchases were cash purchases. - All sales were cash sales, and all inventory items were sold for $25 per unit. 1. Compute the cost of ending inventory and the cost of goods sold using the following methods: (a) FIFO. (b) LIFO, and (c) average cost 2. Assume that Sagamore uses the FIFO inventory costing method. Prepare the joumal entries to record the purchases and sales of inventory