Final answer:
The cost of ending inventory for Carden Corporation using FIFO is $420, and the cost of goods sold is $700.
Step-by-step explanation:
Using the First-In, First-Out (FIFO) inventory method, we can calculate the cost of ending inventory and the cost of goods sold for the Carden Corporation. Under FIFO, the oldest inventory costs are assigned to the cost of goods sold first, which means that the cost of the newer inventory is assigned to the ending inventory.
To find the cost of ending inventory, we take the 60 units remaining and calculate the costs based on the most recent purchase price of $7.00. Thus, 60 units × $7.00 equals $420. The cost of goods sold (COGS) would be the cost of the 140 units that were sold, calculated by using the cost of the starting inventory first ($3.00/unit for 70 units) and then the remaining 70 units from the purchases ($7.00/unit), totaling $210 + $490 = $700.