Austin Enterprises makes and sells three types of dress shirts. Management is trying to determine the most profitable mix. Sales prices, demand, and use of manufacturing inputs follow: Basic Classic Formal Sales price Maximum annual demand (units) Input requirement per unit S 35 18,000 S 210 25,000 S 75 8,000 Direct material Direct labor 0.4 yards 0.7 hours 0.2 yards 2 hours 0.5 yards 7 hours Costs Variable costs Materials Direct labor Factory overhead Marketing S 25 per yard S 21 per hour $ 3 per direct labor-hour 10 % of sales price Annual fixed costs Manufacturing Marketing Administration $47,000 $13,500 $41,000 The company faces two limits: (1) the volume of each type of shirt that it can sell (see maximum annual demand) and (2) 26,500 direct labor-hours per year caused by the plant layout. Required a-1. Assuming the company can satisfy the annual demand, calculate the contribution margin for each type of dress shirt using the table below Basic Classic Formal Total revenue Total variable costs Contribution margin a-2. How much operating profit could the company earn if it were able to satisfy the annual demand? g profit