Answer:
See below
Step-by-step explanation:
Preparation of variable costing income statement
Sales $145,600
Variable cost of goods sold
$92,160
Less:
Inventory, April 30
($12,960)
Total variable cost of goods sold
$79,200
Manufacturing margin
$66,400
Variable selling and administrative expenses ($12,620)
Contribution margin $66,580
Less:
Fixed costs $23,040
Fixed selling and administrative expenses $12,120
Total fixed costs ($35,160)
Income from operations $31,420
Workings
•Variable cost of goods manufactured
= Total manufacturing cost - Fixed manufacturing cost
= $115,200 - $23,040
= $92,160
• Inventory at April 30
Calculate first, manufacturing cost per unit
= Variable cost of goods manufactured / Units manufactured
= $92,160/6,400 units
= $14.4
Therefore, Inventory at April 30
= $14.4 × 900 units
= $12,960
• Variable selling and administrative cost = Total selling and administrative cost - Fixed selling and administrative costs
= $24,740 - $12,120
= $12,620