Cullumber Corporation sells three different models of a mosquito "zapper." Model A12 sells for $ 42and has unit variable costs of $ 29. Model B22 sells for $ 84and has unit variable costs of $ 59. Model C124 sells for $ 336and has unit variable costs of $ 252. 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?

Weighted-Average Unit Contribution Margin