Answer:
The operating income using variable costing if 500 units are sold is $ 20,500
Step-by-step explanation:
Variable Costing System treats all Variable Manufacturing Costs as Part of Product Cost.
Fixed Manufacturing Costs are not accumulated in the product costs calculations but are treated as an expense during the period in which production occurs together with Non-Manufacturing Costs
Variable costing if 500 units are sold
First determine the amount of closing inventory
Opening units 0
Add Production 510
Available for Sale 510
Less Sold units 500
Closing units 10
Costing Calculations
Sales ($ 150 × 500) 75,000
Less Cost of Sales
Opening Stock 0
Direct materials ( $ 16 ×510 ) 8,160
Direct labor ( $ 13 ×510 ) 6,630
Variable manufacturing overhead ( $ 10 ×510) 5,100
Less Closing Stock ( $39 × 10) (390) ( 19,500)
Contribution 55,500
Less Expenses
Fixed Manufacturing Costs (19,200)
Variable selling and administrative costs ( $ 8 ×500) (4,000)
Fixed selling and administrative costs (11,800)
Net Income 20,500