Answer: Increase of $8,200
Step-by-step explanation:
Currently, the company is making a net operating income of;
= Contribution Margin - Fixed expenses
= (90 * 6,700) - 547,700
= $55,300
If the company advertises, net operating income becomes;
= Contribution margin with increase in sales - Fixed expenses including advertisements
= (90 * (6,700 + 170)) - (547,700 + 7,100)
= $63,500
Increase in operating income = 63,500 - 55,300
= $8,200