4. Using the contribution margin and the algebraic methods, compute for the peso amount of sales and the number of units to be sold (Activity 3, Case A) as to: 18. Realize an income of P6,000 before tax 19. Realize a net income of P11,700 after income tax of 35% 20. Bring about a loss of 12,000 Case A Case B Selling price per unit P100 P50 Variable costs per unit 60 35 Fixed Costs 24,000 60.000 7 5. Using the contribution margin and the algebraic methods, compute for the peso amount of sales and the number of units to be sold (Activity 3, Case B) as to: 21. Realize an income of P 30,000 before tax 22. Realize a net income of P 54,000 after income tax of 35% 23. Bring about a loss of P 7, 200 Case A Case B Selling price per unit P100 P50 Variable costs per unit 60 35 Fixed Costs 24,000 60,000