Answer:
a. Prepare journal entries 
J1
Raw Materials $500,000 (debit)
Cash $500,000 (credit)
J2
Factory Labor $363,000 (debit)
Salaries and Wages Accrued $363,000 (credit)
J3
Overheads $175,000 (debit)
indirect materials $50,000 (credit)
Indirect labor $23,000 (credit)
factory rent $32,000 (credit)
factory utilities $19,000 (credit)
factory equipment depreciation $51,000 (credit)
J4
Work in Process $181,500 (debit)
Overheads $181,500 (credit)
b. the total cost, and account classification for each job
 Job 306 Job 307 Job 308 
Direct materials 135,000 220,000 100,000 
Direct labor 85,000 150,000 105,000 
Applied overhead 42,500 75,000 52,500
Total Cost 262,500 445,000 257,500
c. Cost of goods manufactured for Marcelino Company
Job 306 $ 262,500
Job 307 $ 445,000 
Job 308 $ 257,500
Total $ 965,000
d. the gross profit on the sale of the job(s) 
  Job 306
Sales $635,000
Less Cost of Goods Sold :
Opening Finished Inventory $0
Add Cost of Manufacture $262,500
Less Closing Finished Inventory $0 ($262,500)
Gross Profit $372,4500
Step-by-step explanation:
Only Job 306 was sold, thus the gross profit is calculated on the sold job only.