Keep the product:
Sales $500,000Variable Expenses 340,000
---------------------------------------
Contribution Margin 160,000
Fixed Manufacturing 220,000
Net operating income (60,000)
Drop the product:
Sales $0
Variable Expenses 0
----------------------------
Contribution Margin 0
Fixed Manufacturing 180,000
Net operating income (180,000)
Difference of keep and drop the product would be:Sales ($500,000)
Variable Expenses 340,000
-----------------------------------------
Contribution Margin (160,000)
Fixed Manufacturing 40,000
Net operating income (20,000)
Therefore, net operating income would decrease by $20,000 if Product A were dropped.