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39 The Wave Runner is a takeout food store at a popular beachside resort. Teresa Texton, owner of The Wave Runner, was deciding how much refrigerator space to devote to four different beverages. Appropriate data on the four beverages follow: Sales price per case Variable cost per case Cases sold per foot of shelf space per day Limeade $21.20 16.50 32 Lemonade $25.00 18.40 32 Ginger Ale $22.20 15.90 Grape Juice $45.30 36.60 8 The contribution margin per case for Lemonade is