Answer:
Change in net operating income = $4,950
Explanation:
Missing Detail;
Contribution margin = $105 per unit
Current selling unit = 5,300
Increase in monthly sale = 190 unit
Advertisement cost = $15,000
Find:
Change in net operating income
Computation:
Change in net operating income = [Contribution margin x Increase in monthly sale] - Advertisement cost
Change in net operating income = [105 x 190] - 15,000
Change in net operating income = [19,950] - 15,000
Change in net operating income = $4,950