You have the following information for Cullumber Inc, for the month ended October 31, 2025. Cullumber uses a periodic system for irventory. Calculate the weighted-average cost. (Round answer to 3 decimal places, e.g. 5.125.) Weighted-average cost per unit Calculate ending inventory, cost of goods sold, and gross profit under each of the following methods 1. LIFO. 2. FIFO. 3. Average-cost. (Round answers to 0 decimal ploces, e.g. 125.) Calculate the gross profit rate under each of the following methods. 1. LIFO. 2. FIFO. 3. Average-cost. (Round answers to 1 decimal place, e.5. 51,2\%)