Final answer:
Final answer:
The net operating income would be $4,700.
Step-by-step explanation:
To calculate the net operating income, we need to consider the changes in the variables given. First, the variable cost per unit increases by $1, resulting in an increase of $240 in total variable cost (240 units x $1). Second, spending on advertising increases by $1,700.
The contribution margin (CM) is the difference between sales and variable costs, so the new CM would be $28,000 + $240 - $1,700 = $26,540. Finally, we can calculate the net operating income by subtracting the fixed costs from the new CM: $26,540 - $21,840 = $4,700.