Exercise 2-1 (Algo) The Effect of Changes in Activity on Net Operating Income [LO2-1] Whirly Corporations contribution format income statement for the most recent month is shown below: Total Per Unit Sales (7,500 units) $ 232,500 $ 31.00 Variable expenses 150,000 20.00 Contribution margin 82,500 $ 11.00 Fixed expenses 54,800 Net operating income $ 27,700 Required: (Consider each case independently): 1. What would be the revised net operating income per month if the sales volume increases by 60 units? 2. What would be the revised net operating income per month if the sales volume decreases by 60 units? 3. What would be the revised net operating income per month if the sales volume is 6,500 units?