Surf Company can sell all of the two surfboard models it produces, but it has only 476 direct labor hours available. The Glide model requires 2 direct labor hours per unit. The Ultra model requires 4 direct labor hours per unit. Contribution margin per unit is $276 for Glide and $452 for Ultra. (a) Compute the contribution margin per direct labor hour for each product. (b) Determine the best sales mix and the resulting contribution margin. Complete this question by entering your answers in the tabs below. Required A Required B Compute the contribution margin per direct labor hour for each product. Glide Ultra Contribution margin per direct labor hour $ 138 S 113 < Required A Required B > Complete this question by entering your answers in the tabs below. Required A Required B Determine the best sales mix and the resulting contribution margin. Glide Ultra Number of units 238 Contribution margin $ 65,688 $ 0 < Required A Required B >