Question 29 Luke's Diner sells three different kinds of coffee in 5 lb bags. The light roast sells for $30 and has variable costs of $18 The medium roast sells for $50 and has variable costs of $30 The roast sells for $65 and has variable costs of $30 The sales mix of the three sets is: Light, 50%; Medium, 30%; and Dark, 20%. What is the weighted average unit contribution margin? Provide numerical response only, no comma or dollar sign needed. 19 Previous