Important dsiclamer: there was a type in the question you enter 26,000 while in the textbook is for 20,000
Answer:
a. Decrease $1,200,000
Explanation:
Income before internal transfer:
revenue 3150
cost 1050
gross 2100
fixed (2100)
operating 0
external engine purchase (3000)
net (3000)
After internal change:
revenue 1050
cost (960)
gross profit 90
fixed (2100)
operating (2010)
internal engine purchase (1,050)
net (3,060)
difference -3060--3000 = 60
20,000 units x 60 = 1,200,000