Exercise 8.7 (Algo) Costing Inventory in a Periodic System (LO 8-4) Rogers Products uses a periodic inventory system. The company's records show the beginning inventory of PHA oil filters on January 1 and the purchases of this item during the current year to be as follows A physical count indicates 23 units in inventory at year-end Determine the cost of the ending inventory on the basis of each of the following methods of inventory valuation. (Remember to use perlodic inventory costing procedures.) (Round your intermediate and final answers to 2 decimal places.)