Final answer:
If Malouf Corporation decides to purchase part N19 from the outside supplier instead of producing it internally, the company's overall net operating income would decline by $21,900 per year.
Step-by-step explanation:
To calculate the impact on the company's overall net operating income of buying part N19 from the outside supplier, we should compare the savings from not producing the part in-house with the cost of purchasing the part externally and consider the additional segment margin from using the space for another product. We need to consider only the costs that will be eliminated if the production is outsourced, specifically the direct materials, direct labor, variable manufacturing overhead, and the supervisor's salary. Since the allocated general overhead and the depreciation of special equipment are not avoidable, they are not included in the incremental cost analysis.
The annual cost to produce 7,000 units in-house, considering only avoidable costs:
- Direct materials: 7,000 units × $2.20 = $15,400
- Direct labor: 7,000 units × $8.50 = $59,500
- Variable manufacturing overhead: 7,000 units × $1.30 = $9,100
- Supervisor's salary: 7,000 units × $5.80 = $40,600
Total avoidable costs if the part is not produced internally: $124,600
Annual cost to purchase 7,000 units externally: 7,000 units × $24.50 = $171,500
By purchasing the part externally, the company would avoid making the part in-house, saving $124,600 annually. However, this cost needs to be compared to the cost of purchasing the part which is $171,500. Therefore, purchasing the part would result in an additional cost of $171,500 - $124,600 = $46,900.
However, if the space used to produce part N19 internally is utilized for another product that could generate an additional segment margin of $25,000, this amount should then be subtracted from the additional cost of purchasing the part. Final additional cost after considering the segment margin: $46,900 - $25,000 = $21,900.
Therefore, buying part N19 from an outside supplier would result in a decline in the company's overall net operating income by $21,900 per year, which corresponds to option D.