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 (7,1ee units) Variable expenses Contribution margin Fixed expenses Net operating income Total $ 227, 2ee 142,000 85,200 54,900 $ 30,300 Per Unit $ 32.00 20.00 $ 12.00 Required: (Consider each case independently): 1. What would be the revised net operating income per month if the sales volume increases by 90 units? 2. What would be the revised net operating Income per month if the sales volume decreases by 90 units? 3. What would be the revised net operating income per month if the sales volume is 6,100 units? 1. Revised net operating income 2. Revised not operating income 3. Revised not operating income