Answer:
If the company makes the units in-house, it will save $280,800.
Step-by-step explanation:
First, we need to calculate the incremental cost of making the units. We will take into account only the avoidable overhead costs, fixed costs will remain constant in both options (make or buy).
Direct materials= 4
Direct labor= 8
Avoidable overhead= 9*0.2= 1.8
Total variable cost= $13.8
Incremental cost= 54,000*13.8= $745,200
Now, the total cost of buying:
Buy= 54,000*19= $1,026,000
If the company makes the units in-house, it will save $280,800.