Question 1:
 
Estimated number of operating room hours for the year = Number of operating hours in a day x Operating days in week x Number of operating weeks
= 8 x 7 x ( 52-2)
= 2,800
 
Predetermined overhead rate = Estimated overheads/Estimated operating room hours
= $ 560,000 / 2,800
= $ 200 / hour
 
Question 2.
 
Overhead applied = Actual operating room hours used x  Predetermined overhead rate
= 4 x $ 200
= $ 800
 
Question 3.
 
Overhead applied in January = Actual operating room hours used x  Predetermined overhead rate
= 194 x $ 200
= $ 38,800
 
Actual overheads = $ 37,900
Over applied overhead = Overhead applied - Actual overhead
= $ 38,800 - $ 37,900
= $ 900 overapplied
 
                    
                                        Q1: $200/hour
Q2: $800
Q3: $900 overapplied