Whirly Corporations contribution format income statement for the most recent month is shown below: Total Per Unit Sales (7,700 units) $ 261,800 $ 34.00 Variable expenses 138,600 18.00 Contribution margin 123,200 $ 16.00 Fixed expenses 54,500 Net operating income $ 68,700 Required: (Consider each case independently):

What would be the revised net operating income per month if the sales volume increases by 80 units?

What would be the revised net operating income per month if the sales volume decreases by 80 units?

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