Answer:
$46,580
Explanation:
Calculation for What should be the overall effect on the company's monthly net operating income of this change
First step is to calculate the New contribution margin
New contribution margin= 152 - 13
New contribution margin = 139
Second step is to calculate the New units monthly sales
New units monthly sales= 9,600 + 420
New units monthly sales= 10,020
Third step is to calculate the New total contribution margin
New total contribution margin= 10,020 x 139
New total contribution margin= 1,392,780
Fourth Step is to calculate the Present total contribution margin
Present total contribution margin =9600 x 152
Present total contribution margin= 1,459,200
Now let calculate the Change in net operating income
Change in total contribution margin( 66,420)
(1,392,780-1,459,200)
Add savings in salesperson's salaries 113,000
Change in net operating income =$46,580
Therefore what should be the overall effect on the company's monthly net operating income of this change is $46,580