Answer:
$230,000
Step-by-step explanation:
The Profit margin controllable by the segment manager contains only items directly controllable by the manager and this consists of variable costs. So deduct the profit margin controllable by the segment manager from segment contribution margin to arrive at Variable operating expenses.
Calculation of Variable operating expenses
Segment contribution margin $540,000
Less Profit margin controllable by the segment manager ($310,000)
Variable operating expenses $230,000