John Co. produces a product that sells for P80. The variable manufacturing costs are P50 per unit. The fixed manufacturing cost is P10 per unit based on the current level of activity, and fixed...

John Co. produces a product that sells for P80. The variable manufacturing costs are P50 per unit. The fixed manufacturing cost is P10 per unit based on the current level of activity, and fixed selling and administrative costs are P10 per unit. A selling commission of 10% of the selling price is paid on each unit sold. What is the contribution margin per unit?