CHAPTER 21 (FIN MAN); CHAPTER 7 (MAN) Variable Costing for Management Analysis
Prob. 21–3B (FIN MAN); Prob. 7–3B (MAN) (Concluded)
Head Gear Inc.
Variable Costing Income Statement
For the Month Ended August 31
Variable cost of goods sold:
Inventory, August 1 (1,200 units × $12.80)
Variable cost of goods manufactured
Total variable cost of goods sold
Manufacturing margin
Variable selling and administrative expenses
(10,920)
Contribution margin
Fixed manufacturing costs
Fixed selling and administrative expenses
Total fixed costs
(20,560)
3. a. For July, the operating income reported under absorption costing exceeds
the operating income reported under variable costing by $2,880. This
difference is due to including $2,880 of fixed cost in inventory under
absorption costing [1,200 units × $2.40 ($15,360 ÷ 6,400)]. The $2,880 was
thus deferred to August under absorption costing, while it was included as an
expense of July (part of fixed costs) under variable costing.
b. For August, the operating income reported under absorption costing is less
4. Head Gear Inc. was equally profitable in July and in August under the variable
costing concept. Sales and the variable cost per unit were the same for both July
and August. The difference in income reported under the absorption costing
concept is due to allocating $2,880 of fixed manufacturing cost to the July 31
ending inventory.