An aircraft manufacturer produces custom built airplanes and uses job order costing. The company assigns overhead cost to completed jobs on the basis of 50% of direct labor cost. The job cost sheet for job # 1 shows that $15,000 of direct labor costs were incurred and $4,000 of direct materials were Five airplanes were produced in job #1. What is the total cost assigned to job # 1 ? What is unit product cost for job # 1