Answer:
$10,500
Explanation:
The computation of Total cost is shown below:-
Unit cost = (Total income tax expense + Unit-level overhead + Batch-level set-up cost) × Units per batch
= ($3 + $2 + $1) × 5,000
= $6 × 5,000
= $30,000
Total incremental cost = Unit cost + Batch level set up cost + Product level Supervisory salaries + Rental income
= $30,000 + $25,000 + $37,500 + $18,000
= $110,500
Now, Present cost = Switches cost × Units per batch
= $20 × 5,000
= $100,000
Net increase in cost = Total incremental cost - Present cost
= $110,500 - $100,000
= $10,500
Therefore for computing the net increase in cost we simply deduct the present cost from total incremental cost.