Module 5 Exercises & Problems Saved Help Save & Exit Submit Check my work 2 Selling price Variable expenses Contribution margin Per Unit $ 90 63 $ 27 Percent of Sales 100% 70 2 of 2 30% Fixed expenses are $30,000 per month and the company is selling 2,000 units per month. ES 2-a. Refer to the original data. How much will net operating income increase (decrease) per month if the company uses higher-quality components that increase the variable expense by $2 per unit and increase unit sales by 10%. 2-b. Should the higher-quality components be used? eBook Hint Print Complete this question by entering your answers in the tabs below. -ferences Req 2A Req 2B Refer to the original data. How much will net operating income increase (decrease) per month if the company uses higher- quality components that increase the variable expense by $2 per unit and increase unit sales by 10%. Net operating income increases by $ 24 000 Req 2B > aw