15. marketing: yummy ice cream conducted a survey and found that people liked their black walnut flavor three times more than their tutti-frutti flavor. one distributor wants to order at least 20,000 gallons of the tutti-frutti flavor. the company has all of the ingredients to produce both flavors, but it has only 45,000 gallon-size containers available. if each gallon of ice cream sells for $2.95, how many gallons of each type flavor should the company produce?