Answer:
The net operating income using variable costing totals $139,000.
Explanation:
Tustin Corporation
Contribution Margin Income Statement for Year 1
Amount
Revenue: $680,000
(10,000 * $68)
Subtract: Variable Expense
Direct Material = $100,000
(10,000 * $10)
Direct Labor = $60,000
(10,000 * $6)
Variable manufacturing overhead = $40,000
(10,000 * $4)
Variable selling and administrative = $60,000
(10,000 * $6)
Contribution = $420,000
Subtract: Fixed Costs
Fixed Manufacturing overhead = $220,000
Fixed selling and administrative = $61,000
Net Income = $139,000