Cullumber Corporation sells three different models of a mosquito "zapper." Model A12 sells for $64 and has unit variable costs of $45. Model B22 sells for $128 and has unit variable costs of $90. Model C124 sells for $512 and has unit variable costs of $384. The sales mix(as a percentage of total units) of the three models is A12,60%;B22,15%; and C124,25%. What is the weighted-average unit contribution margin? (Round answer to 2 decimal places, es. 15.50.) Weighted-Average Unit Contribution Margin