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

	Total		Per Unit
Sales (7,900 units)	$	260,700		$	33.00
Variable expenses		142,200			18.00
Contribution margin		118,500		$	15.00
Fixed expenses		55,900
Net operating income	$	62,600

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 6,900 units?