Answer and Explanation:
The computation is shown below:
a. Unit product cost under variable costing is
Direct material $25
Add: Direct labor $20
Add: Variable manufacturing overhead $1
Unit product cost $46
b. The preparation of the contribution income statement is presented below:
Sales (3,000 units × $108) $324,000
Less: Variable cost of
goods sold (3,000 units × $46) ($138,000)
Less: Variable selling
and administrative expense (3,000 units × $14) ($42,000)
Contribution margin $144,000
Less: Fixed manufacturing overhead ($64,530)
Less: Fixed selling and administrative expense ($9,000)
Net operating income $70,470
c. The absorption costing net operating income is
Net operating income under variable costing $70,470
Less: Fixed manufacturing
overhead (955 units - 345 units) × $27 ($16,470)
Net operating income under absorption costing $54,000
The $27 come from
= $64,530 ÷ 2,390 units
= $27