Answer:
a. Cost per case under Absorption costing:
= Direct materials per case + Direct labor per case + Variable manufacturing overhead per case + Fixed manufacturing overhead per case
= 15 + 6 + 3 + 90,000/ 30,000 cases
= $27
Cost per case under Variable costing:
= Direct materials per case + Direct labor per case + Variable manufacturing overhead per case
= 15 + 6 + 3
= $24
b. First we need to calculate income under both methods:
Under Absorption costing:
= Sales - Cost of goods sold - Selling and Admin expenses
= (30,000 cases * 32) - (30,000 * 27) - 20,000
= $130,000
Under Variable Costing:
= Sales - Cost of Goods sold - Fixed manufacturing overhead - Selling and Admin expenses
= (30,000 * 32) - (30,000 * 24) - 90,000 - 20,000
= $130,000
<em>There is no difference in income because the cases manufactured equals the cases sold. </em>
