Answer:
The answer is "$5500".
Explanation:
Analysis Differential:
Make Buy
Cost of variable [tex]800\times 7 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ = 5600[/tex]
Fixed- cost [tex]16000\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ 16000[/tex]
Purchasing cost [tex]800\times 12\ = 9600[/tex]
Cost of opportunity [tex]\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ 9500[/tex]
Total relevant cost [tex]31100 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ 25600[/tex]
Increasing operating income [tex]= 31100-25600 = 5500[/tex]