Answer:
Note: The full question is attached as picture below
1. Cost of goods sold = Beginning inventory + Purchase - Ending inventory
If FIFO method is used,then beginning and ending inventory will increase. Increase in beginning inventory will increase the cost of goods sold. Increase in ending inventory will decrease the cost of goods sold.
Cost of goods sold under FIFO = $31049 + $2139 - $1934 = $31,254
2. Cost of goods sold under LIFO = $31049
Cost of goods sold under FIFO = $31254
Increase in cost of goods sold = $31254 - $31049 = $205
Increase in cost of goods sold will decrease the income before taxes
Decrease in income before taxes = $205