Answer:
c. 31,504 direct labor hour
Step-by-step explanation:
Note: The full question is attached as picture below
Manufacturing overhead applied = Actual Manufacturing overhead + Over-applied overhead
Manufacturing overhead applied = 697,450 + 40,680
Manufacturing overhead applied = 738,130
Manufacturing overhead applied = Predetermined overhead rate * Actual direct labor hour
738,130 = Predetermined overhead rate * 33,100 direct labor hour
Predetermined overhead rate = $738,130 / 33,100 direct labor hour
Predetermined overhead rate = $22.30 direct labor hour
Estimated direct labor hour = Estimated Manufacturing overhead / Predetermined overhead rate
Estimated direct labor hour = $702,540 / $22.30 direct labor hour
Estimated direct labor hour = 31,504 direct labor hour
So, the estimated direct labor hours at the beginning of the year used in the predetermined overhead rate must have been 31,504 direct labor hour.