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

	Total			Per Unit
Sales (7,500 units)	$	225,000		$	30.00
Variable expenses		135,000			18.00
Contribution margin		90,000		$	12.00
Fixed expenses		55,900
Net operating income	$	34,100

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 6,500 units?