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. Sales (7,700 units) Variable expenses Contribution margin Fixed expenses Net operating income Required: Total $ 238,700 138,600 Per Unit $ 31.00 (Consider each case independently): 100,100 54,800 $ 45,300 18.00 $13.00 1. What would be the revised net operating income per month if the sales volume increases by 30 units? 2. What would be the revised net operating income per month if the sales volume decreases by 30 units? 3. What would be the revised net operating income per month if the sales volume is 6,700 units? 1. Revised net operating income 2 Revised net operating income 3. Revised net operating income