Answer:
$5 per unit
Explanation:
In this question, we compare the total cost and outside supplier cost which are shown below:
Total cost = Direct material per unit + direct labor per unit + variable overhead per unit
= $10 + $14 + $3
= $27
And, the outside supplier cost is $32
So, the incremental cost would be
= $32 - $27
= $5 per unit
The fixed cost would remain unchanged. So, we do not consider it.