Whirly Corporation's contribution format income statement for the most recent month is shown below: Total 163,480 120,400 66,30e Variable expenses Contribution margin $283,800$33.00 19.00 14.0e Required: (Consider each case independently): 1. What would be the revised net operating income per month if the sales volume increases by 50 units? 2. What would be the revised net operating income per month if the sales volume decreases by 50 units? 3. What would be the revised net operating income per month if the sales volume is 7,600 units? 1. Revised net oper 2. R 3 Revised net operating income