Answer:
$0.70 per direct labor hour
$30 per direct labor hour
Step-by-step explanation:
The computation is shown below:
a. For predetermined overhead rate using direct labor costs is
= Estimated overhead ÷ estimated direct labor cost
= $420,000 ÷ $600,000
= $0.70 per direct labor hour
b. For the predetermined overhead rate using machine hours is
= Estimated overhead ÷ estimated machine hours
= $420,000 ÷ 14,000 machine hours
= $30 per direct labor hour