NoFly Corporation sells three different models of a mosquito "zapper." Model A12 sells for $54 and has variable costs of $39. Model B22 sells for $105 and has variable costs of $73. Model C124 sells for $411 and has variable costs of $309. The sales mix of the three models is A12, 59%; B22, 30%; and C124, 11%. What is the weighted-average unit contribution margin? (Round answer to 2 decimal places, e.g. 15.50.)