Dias Company uses the periodic inventory system to account for inventories. Information related to Dias Company's inventory at October 31 is given below:

October1Beginning inventory400units @ $9.80 =$ 3,920

8Purchase800units @ $10.40 =8,320

16Purchase600units @ $10.80 =6,480

24Purchase200units @ $11.80 =2,360

Total units and cost2,000units$21,080

Required:

1. Show computations to value the ending inventory using the FIFO cost assumption if 550 units remain on hand at October 31.
2. Show computations to value the ending inventory using the weighted-average cost method if 550 units remain on hand at October 31.
3. Show computations to value the ending inventory using the LIFO cost assumption if 550 units remain on hand at October 31.