Step 1
Given that:
Contribution margin in the department = $50,000
Fixed Expenses of Department = $65000
Avoidable Fixed Costs = $40000
Increase in Contribution margin of other product lines by discontinuing this department = $120,000
Existing contribution margin will be lost in case department will be discontinued. This will reduce net income of the company.
Fixed costs $40,000 that can be eliminated will increase net income $40000 of the company.
Contribution margin of other product lines $120,000 will increase net income.
Net change in company's overall earnings = Increase of net income from contribution margin of other product lines + Increase in net income by avoiding net income - Decrease in net income due to lost contribution
= 120,000 + 40,000 - 50,000
= $110,000
So, If the department is discontinued, then annual change in the company's overall net operating will be increase in earnings by $110,000.