Brief Exercise 6-7 NoFly Corporation sells three different models of a mosquito "zapper." Model A12 sells for $57 and has variable costs of $44. Model B22 sells for $101 and has variable costs of $73. Model C124 sells for $403 and has variable costs of $304. The sales mix of the three models is A12, 55%; B22, 28%; and C124, 17%. What is the weighted average unit contribution margin? (Round answer to 2 decimal places, e.g. 15.50.) Weighted-Average Unit Contribution Margin $