Answer:
Results are below.
Step-by-step explanation:
Under the FIFO (first-in, first-out) method, the cost of goods sold is calculated using the cost of the first units incorporated into inventory:
Units sold= 860
COGS= 290*5 + 400*6 + 170*7
COGS= $5,040
Ending inventory= 130*7= $910
Under the LIFO (last-in, first-out) method, the cost of goods sold is calculated using the cost of the last units incorporated into inventory:
COGS= 300*7 + 400*6 + 160*5
COGS= $5,300
Ending inventory= 130*5= $650
As the cost of the units increases in time, the FIFO method provides the higher ending inventory.