Pro Bike manufactures and sells two types of bikes: road bikes and mountain bikes. The company sold 600 units of each type of bike during the year. Per unit Mountain bikes. Road bikes $ 1,800 Sales price $ 1,200 Variable cost of goods sold 1,280 760 Variable selling and administrative expenses 70 80a. Compute contribution margin (in dollars) for each product. b. Compute contribution margin ratio for each product. Which product has the better contribution margin ratio? Complete this question by entering your answers in the tabs below. Required A Required B Compute contribution margin ratio for each product. Which product has the better contribution margin ratio? Road bikes Mountain bikes Contribution margin ratio % % Which product has the better contribution margin ratio?