Answer:
 Material cost per unit  =$3.33
Explanation:
Item              units                  Equivalent unit
Transferred out    48,000    48,000× 100     48,000            Â
Closing WIP        12,000    12,000× 50%     6,000
Total equivalent unit                         54,000
unit Cost of direct material = direct material cost/equivalent units
                   = 180,000/54000
                   =$3.33