Supply the missing data in each independent case.

Case 1 Case 2 Case 3 Case 4 Case 5

Unit sales 700 300 ? ? ?

Sales revenue R42 000 ? ? R58 000 R40 000

Variable cost per unit R45 R1 R15 ? ?

Contribution margin ? R1 200 ? ? R10 000

Fixed costs R7 500 ? R60 000 ? ?

Operating income ? R100 ? ? ?

Unit contribution margin ? ? ? R1 R2

Break-even point (units) ? ? 5 000 30 000 ?

Margin of safety ? ? 1 000 -1 000 600