Required information [The following information applies to the questions displayed below.] Data for Hermann Corporation are shown below: Selling price Variable expenses Contribution margin Percent Per Unit of Sales $ 135 81 100% 60 $ 54 40% Fixed expenses are $87,000 per month and the company is selling 2,900 units per month. 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 $5 per unit and increase unit sales by 20%. 2-b. Should the higher-quality components be used? Complete this question by entering your answers in the tabs below. Ces Req 2A Req 28 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 $5 per unit and increase unit sales by 20%. Net operating income by Req 28 >