Following are data from 4 separate companies. Supply the missing data in each independent case.

	Case 1	Case 2	Case 3	Case 4
Sales revenue	$100,000	$90,000	$Answer	$Answer
Contribution margin	$40,000}	$Answer	$20,000	$Answer
Fixed Costs	$24,000	$Answer	$Answer	$Answer
Net income	$Answer	$7,000	$9,000	$Answer
Variable cost ratio	Answer	0.50	Answer	0.20
Contribution margin ratio	Answer	Answer	0.40	Answer
Break-even point (dollars)	$Answer	$Answer	$Answer	$20,000
Margin of safety (dollars)	$Answer	$Answer	$Answer	$30,000