Answer:
The preparation is shown below:
Explanation:
The preparation is presented below
Particulars        Make   Buy       Net Income Increase
                                      or (Decrease)
Variable
Manufacturing
Cost (10,000 × $5) $50,000           $50,000  Â
Fixed
Manufacturing
Cost (10,000 × $3) $30,000   $30,000    No effect                              Â
Purchase Price
(10,000 × $6)      -        $60,000    -$60,000                        Â
Total Annual Cost $80,000 Â Â $90,000 Â Â -$10,000
As we can see that the total annual cost is less in make decision as compared to buy decision so the Manson should make the part   Â