sales mix of the th diferent mod What is the weighted-average unit contribution margin? (Round ansiver to 2 decimal places, e.g. 15.50.) Weighted-Average Unit Contribution Margin Question 29 NoFly Corporation sells three different models of a mosquito "zapper. Model A12 sels for $52 and ha" ariable costs of S42. Model B22 sels for $107 and has variable costs of $77. Model C124 sells for $404 and has vanable costs of S311, The sales mix of the three models is A12, 58%: B22, 29%; and C124, 13%. sells for and has 5404