Exercise 6-1 (Algo) The Effect of Changes in Sales Volume on Net Operating Income [LO6-1] Whirly Corporation's contribution format income statement for the most recent month is shown below: Per Unit Total Sales (8,900 $ $ 33.00 units) 293,700 Variable expenses 160,200 18.00 Contribution 133,500 margin $ 15.00 Fixed expenses 55,400 Net operating $ 78,100 income 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 7,900 units? 1. Revised net operating income 2. Revised net operating income 3. Revised net operating income