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

	Total			Per Unit
Sales (7,300 units)	$	248,200		$	34.00
Variable expenses		131,400			18.00
Contribution margin		116,800		$	16.00
Fixed expenses		55,700
Net operating income	$	61,100

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 6,300 units?