A businessman buys a particular product at P10 per unit and sells them at P20 per unit. His fixed cost is P100. Due to stiff competition, the sale of the product began to decline. The selling price decreased by 5% of the units sold. The variable and fixed cost remains constant. a. Represent the new selling price. b. Determine the TR, TC and profit function. c. Find the BEP quantity revenue. d. What is the profit at a sale volume of 60 units? Solution: Variable Cost (amount) Fixed Cost (amount) Selling Price (amount) New Selling Price (equation) Total Cost Function (equation) Total Revenue Function (equation) Profit Function (equation) Profit (if x = 50 units) Sketch of the graph: Answer