Exercise 6-21 (Algo) Contribution margin ratio by product line LO A1 Pro Bike manufactures and sells two types of bikes: road bikes and mountain bikes. The company sold 670 units of each type of bike during the year. Per unit Sales price Variable cost of goods sold Variable selling and administrative expenses Road bikes $ 1,700 1,130 60 Mountain bikes $ 1,400 840 70 a. 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 total contribution margin (in dollars) for each product. Road bikes Mountain bikes Contribution margin