Whispering Winds Industries sells three different sets of sportswear. Sleek sells for $52 and has unit variable costs of $36; Smooth sells for $72 and has unit variable costs of $42; Potent sells for $82 and has unit variable costs of $62. The sales mix of the three sets is: Sleek, 50%; Smooth, 30\%; and Potent, 20%. What is the weighted-average unit contribution margin? Weighted-average unit contribution margin