Answer:
$30.70 per direct labor hours
Step-by-step explanation:
The computation of the predetermined manufacturing overhead rate per direct labor hour is shown below:
= Total estimated manufacturing overhead ÷ total estimated direct labor hours
where,
Total estimated manufacturing overhead = Wages of factory janitors + Utilities for factory + Rent on factory building
= $39,500 + $17,000 + $13,500
= $70,000
And, the estimated direct labor hour is 2,280
So, the predetermined overhead rate
total estimated machine hours = 1600
= $70,000 ÷ 2,280 machine hours
= $30.70 per direct labor hours