Answer:
$26000 greater than if the company bought the part
Step-by-step explanation:
The computation of the operating income in case of the making part is shown below:
In making 40,000 parts
The relevant cost is $60,000
In the case when the product is buyed from outsider
Purchase costs ($3 × 40,000) $120,000
Less - avoidable fixed cost ($70,000 × 30%) ($21,000
Less; profit from the sale of another product ($13,000 )
Relevant cost to buy $86,000
Now the difference of cost is
= $86,000 - $60,000
= $26,000