Answer:
The total cost of the department’s ending work in process inventory is $684,000
Explanation:
The computation of the total cost is shown below:
= Material cost + conversion cost
where,
Material cost = (Transferred units + ending work in progress) Ă— material cost per unit
= (68,000 units + 12,000 units) Ă— $4
= $320,000
Conversion  cost = (Transferred units + ending work in progress × percentage of completion) × material cost per unit
= (68,000 units + 12,000 units Ă— 40%) Ă— $5
= $364,000
Now put these values to the above formula Â
So, the value would equal to
= $32,000 + $364,000
= $684,000