X Your answer is incorrect. Waterway Corporation sells three different models of a mosquito zapper. Model A12 sells for $54 and has variable costs of $37. Model B22 sells for $111 and has variable costs of $79. Model C124 sells for $401 and has variable costs of $315. The sales mix of the three models is A12,57%; B22, 29%; and C124, 14%. What is the weighted-average unit contribution margin? (Round answer to 2 decimal places, e.g. 15.50.) $ tA 33.77 Weighted-Average Unit Contribution Margin