
Answer and Explanation:
The preparation of the financial impact is shown below:
Particulars                   Make             Buy
Direct Material (7,400 × $7.50) $55,500 Â
Direct Labor (7,400 × $4.20) $31,080 Â
Variable overhead (7,400 × $8.30) $61,420 Â
Supervisors salary (7,400 × $3.20) $23,680 Â
Depreciation on special equipment $0 Â Â Â Â Â Â Â Â Â Â Â Â Â $0
General overhead           $3,400 Â
Purchase cost (7,400 × $27)                $199,800
Opportunity cost                        $(18,000)
Total Annual Cost            $175,080         $181,800
b. As we can see that the total annual making cost is $175,080 and the total annual buying cost is $181,800 which increase the cost by $6,720. So in this case the company should make the product rather than buying them