Answer:
the estimated direct labor-hours at the beginning of the year used to calculate the predetermined overhead rate was 22,250 hours
Step-by-step explanation:
Manufacturing overheads are allocated to production on a predetermined basis as no business can wait to know its profit to properly allocate costs to the products sold.
It is usually based on a certain predetermined activity level (usually direct labour hours) which is then coated into the product material and labor costs to determine its manufacturing costs.
We are told the Actual overhead was over applied by $18,000, and the Actual Manufacturing overhead was $373,620.
This implies the Overhead charged to production was;
$373,620 + $18,000 = $391,620
At an activity level of 30,500 direct labor hours.
The Predetermine direct labour rate is:
$391,620 / 30,500 = $12.84
And this implies the direct labor hours at the beginning of the year is
$285,690 divided by $12.84 = 22,250 hours