Tanek Industries manufactures and sells three different models of wet-dry shop vacuum cleaners. Although the shop vacs vary in terms of quality and features, all are good sellers. Tanek is currently operating at full capacity with limited machine time. Sales and production information relevant to each model follows. Product Eco Standard Deluxe Selling price Variable costs and expenses Machine hours required $30 $16 0.5 $51 $ 20 0.8 $101 $47 1.6 Calculate contribution margin per unit. Product Economy Standard Deluxe Contribution margin per unit $ eTextbook and Media gnoring the machine time constraint, which single product should Tanek Industries produce? eTextbook and Media What is the contribution margin per unit of limited resource for each product? (Round answers to 2 decimal places, eg. 10.50.) Economy Standard Deluxe Contribution margin per limited resource eTextbook and Media If additional machine time could be obtained, how should the additional time be used? The additional time should be used to produce the product. eTextbook and Media