Answer:
the question is incomplete, so I looked for similar questions (see attached image).
this is a differential analysis that compares two alternative situations:
Make Buy Net income increase
(decrease)
materials $1,066,000 $0 $1,066,000
labor $779,000 $0 $779,000
var. overhead $143,500 $0 $143,500
fixed overhead $594,500 ($405,000) $999,500
purchase price $0 $2,378,000 ($2,378,000)
total $2,583,000 $1,973,000 $610,000
If Jobs decides to purchase the Tri-Robos from Tienh, and it is able to avoid $405,000 in fixed cots, then its operating income should increase by $610,000.
