The following account appears in the ledger prior to recognizing the jobs completed in January: 
 Work in Process 
 Balance, January 1 $17,510 
 Direct materials 142,360 
 Direct labor 153,560 
 Factory overhead 80,720 
 Jobs finished during January are summarized as follows: 
 Job 210 $70,950 
 Job 224 $82,770 
 Job 216 43,360 
 Job 230 161,600 
 Required:
 a. Journalize the entry to record the jobs completed. 
 b. Determine the cost of the unfinished jobs at January 31.