Answer:
A. 730,000
B. 31,000
C. 1,601,000
Step-by-step explanation:
We can calculate the total amount of manufacturing overhead applied during the year by first calculating the predetermined overhead rate 
DATA
Estimated Total Manufacturing overhead at the beginning of the year = 638,750 
Estimated direct Labour hours at the beginning of the year = 35,000 
Predetermined Overhead Rate = 638,750 /35,000 
Predetermined Overhead Rate 18.25 
Actual Direct Labour Hours = 40,000 
Requirement A 
Total Manufacturing Overhead applied = Predetermined Overhead Rate x Actual Direct Labour Hours
Total Manufacturing Overhead applied = 18.25 x 40,000
Total Manufacturing Overhead applied = 730,000 
Requirement B
Actual Manufacturing Overhead (166000 + 595000) = 761,000 
Over/Under applied = Actual Manufacturing Overhead - Total Manufacturing Overhead applied
Over/Under applied = 761,000 - 730,000 
Manufacturing Overhead is underapplied = 31,000 
Requirement C
Cost of Goods sold (adjusted) = Manufacturing Overhead is underapplied + Cost of Goods sold (unadjusted) 
Cost of Goods sold (adjusted) = 31,000 + 1,570,000
Cost of Goods sold (adjusted) = 1,601,000