Porter Company s most recent contribution format income statement is shown below:

	Total	Per Unit
Sales (36,000 units)	$252,000	$7.00
Variable expenses	180,000	5.00
Contribution margin	72,000	$2.00
Fixed expenses	45,000
Net operating income	$ 27,000

Required:

Prepare a new contribution format income statement under each of the following conditions (consider each case independently): (Do not round intermediate calculations. Round your "Per unit" answers to 2 decimal places.)

1.	The number of units sold increases by 19%.

2.	The selling price decreases by 70 cents per unit, and the number of units sold increases by 21%.

3.	The selling price increases by 50 cents per unit, fixed expenses increase by $7,000, and the number of units sold decreases by 7%.

4.	Variable expenses increase by 10 cents per unit, the selling price increases by 20%, and the number of units sold decreases by 14%.