Hi Tutor could you please help me and show how you got the answers? What are the missing data points in the chart. See attached for data.

Supply the missing data in each independent case. Please put your answers in the places marked with a question mark. Case A Case B Unit sales ? ? Sales revenue ? $180000 Variable cost per unit $10 ? Contribution Margin ? ? Fixed costs $90,000 ? Operating income ? ? Unit contribution margin ? $3 Break-even point (units) 6000 10,000 Margin of Safety (units) 1,000 20,000