Whirly Corporation's contribution format income statement for the most recent month is shown below: Sales (8,600 units) Variable expenses Contribution margin Total $ 266,600 163,400 103,200 54,700 Per Unit $ 31.00 19.00 $ 12.00 02:56:55 Net operating income $ 48,500 Fixed expenses Book Required: Hint Print erences (Consider each case independently): 1. What would be the revised net operating income per month if the sales volume increases by 70 units? 2. What would be the revised net operating income per month if the sales volume decreases by 70 units? 3. What would be the revised net operating income per month if the sales volume is 7,600 units? 1. Revised net operating income 2. Revised net operating income 3. Revised net operating income Check m