Set up and solve each of the following problems. Be sure to indentify the variables first. 28. An ice cream store has two new flavors: Fantasy and Eestasy. Each barrel of Fantasy requires 4
pounds of nuts, 3 pounds of chocolate, and brings in a profit of $50. Each barrel of Ecstasy
requires 4 pounds of nuts, 1 pound of chocolate, and brings in a profit of $40. If there are 16
pounds of nuts and 10 pounds of chocolate in stock, how many barrels of each can be made in
order to maximize the profit?
29. How many ounces of a 20% saline solution and how ounces of a 70% saline solution are needed
to obtain 25 ounces that is a 50% saline solution?
30. The number of red candies in a bag varies inversely with the number of yellow candies and
directly with the number green candies. When there are 50 red candies in the bag, there are 20
green candies and 10 yellow candies. How many yellow candies are in the bag when there are 10
red candies and 100 green candies?