Answer:
The answer is: Increase 2,558 units.
Step-by-step explanation:
We have:
Manufacturing overhead allocated to one unit = 106,760 / 10,600 = $10.07;
We have:
Operating income using variable costing - Manufacturing overhead released from inventory + Manufacturing overhead deferred in inventory = Operating income using absorption costing.
=> Manufacturing overhead deferred in inventory - Manufacturing overhead released from inventory = Operating income using absorption costing - Operating income using variable costing = $25,760.
=> 10.07 x ( Units in closing inventory − Units in opening inventory) = 25,760
<=> Units in closing inventory − Units in opening inventory = 2,558 units.
Thus, inventory level increase by 2,558 units through out the year.