Answer: 150%
Step-by-step explanation:
Based on the question,
Direct materials = $400 + $200 = $600
Direct labor cost = $300 + $500 = $800
Overhead = Closing WIP - Direct material cost - Direct labor cost
= $2600 - $600 - $800
= $1200
The predetermined overhead rate based on the direct labor will be calculated as:
= Overhead / Direct labour cost
= $1200/$800
= 1.50
= 150%