Sunland Corporation sells three different models of mosquito "zapper." Model A12 sells for $60 and has variable costs of $50. Model B22 sells for $125 and has variable costs of $90. Model C124 sells for $420 and has variable costs of $315. The sales mix of the three models is as follows: A12,65%;B22,15%; and C124,20%. (a) What is the weighted-average unit contribution margin? (Round answer to 2 decimal places, es. 15.25.)