Answer:
a. $48,700
Step-by-step explanation:
Contribution margin for Division A = $44,300
Contribution margin for Division B = 40% * Sales Value = 40% * $232,000 = $92,800
Total contribution margin = $44,300 + $92,800 = $137,100
Office Segment Margin =Total contribution margin - Traceable fixed expenses
Office Segment Margin = $137,100 - $55,800
Office Segment Margin = $81,300
Net Operating Income = Office Segment Margin - Common Fixed Expenses
Common Fixed Expenses = Office Segment Margin - Net Operating Income
Common Fixed Expenses = $81,300 - $32,600
Common Fixed Expenses = $48,700