Whirly Corporations contribution format income statement for the most recent month is shown below:

	Total			Per Unit
Sales (8,500 units)	$	280,500		$	33.00
Variable expenses		161,500			19.00
Contribution margin		119,000		$	14.00
Fixed expenses		55,000
Net operating income	$	64,000

Required:

(Consider each case independently):

1. What would be the revised net operating income per month if the sales volume increases by 40 units?

2. What would be the revised net operating income per month if the sales volume decreases by 40 units?

3. What would be the revised net operating income per month if the sales volume is 7,500 units?