Brief Exercise 19-7 NoFly Corporation sells three different models of a mosquito "zapper." Model A12 sells for $60 and has variable costs of $44. Model B22 sells for $109 and has variable costs of $81. Model C124 sells for $416 and has variable costs of $319. The sales mix of the three models is A12, 5796; B22, 30%; and C124, 13%. What is the weighted-average unit contribution margin? (Round answer to 2 decimal places, e.g. 15.50.) Weighted-Average Unit Contribution Margin g