Answer:
A) $28620 greater than if the company bought the part
Explanation:
The cost to produce the parts for Jackson Corporation amounts to $117000 for 26000 produced. The variable cost per unit is only 70000/26000 = $2.69 / unit.
On the other hand, purchasing from the outside supplier would cost $4.62 per unit along with $21500 in fixed costs. (43000 / 2 =21500)
Thus, it will cost $141620 (21500 + 4.62*26000) to purchase 26000 units from outside.
The benfit of producing these units by Jackson corporation is 141620 - 113000 = $28620.