Answer: Increase in net income by $20,000.
Step-by-step explanation:
If the special order is accepted,
Net income = Revenues - Manufacturing costs - Shipping cost
= (5,000 units × $36) - (5,000 units × $27) - (5,000 units × $5)
= $180,000 - $135,000 - $25,000
= $20,000
The special order should be Accepted. so they can earn an additional income of $20,000