Answer:
$8,222
Step-by-step explanation:
The computation of increase in net operating income is shown below:-
Contribution margin per unit = Contribution margin ÷ Sales volume units
= ($31,500 ÷ 1,000)
= $31.5
Increase in net operating income = Contribution margin - Fixed expenses
= (1,001 × $31.5) - $23,310
= $8,222
Therefore for computing the increase in net operating income we simply applied the above formula.