Crane Corporation sells three different models of a mosquito "zapper." Model A12 sells for $52 and has unit variable costs of $36. Model B22 sells for $104 and has unit variable costs of $73. Model C124 sells for $416 and has unit variable costs of $312. The sales mix(as a percentage of total units) of the three models is A 12, 60%; B22, 15%; and C124, 25%. What is the weighted-average unit contribution margin? (Round answer to 2 decimal places, e.g. 15.50.) Weighted-Average Unit Contribution Margin