Answer:
$30
Explanation:
The computation of relevant unit cost to make the part internally is shown below:-
Relevant cost of making part = Direct material + Direct labor + Manufacturing overhead
= $4 + $10 + ($40 - (100% - $60%)
= $4 + $10 + ($40 - 40%)
= $4 + $10 + $16
= $30
So, for computing the relevant unit cost to make the part internally we simply applied the above formula.