Answer: $640
Step-by-step explanation:
Phantom profits occur when historical costs and replacement costs are different .
It usually occurs when the first in, first out (FIFO) inventory system is used instead of Last in,first out (LIFO).
The total number of inventory = 300 + 400 + 340 = 1040
Total inventory sold = 1040 - 380 = 660
Under the FIFO system, cost of goods sold =
(300 × 8) + (360 × 9) = $5640
Under the LIFO system, cost of goods sold =
(340 × 10) + (320 × 9) = $6280
Phantom profit = LIFO - FIFO
$6280 - $5640 = $640