Pet Nutrition: Food CostPETsMART.com sold the followingvarieties of dog food in June 2003....

Pet Nutrition: Food Cost

PETsMART.com sold the following

varieties of dog food in June 2003. The price shown is for an 8-pound bag.

Pro Plan Adult Chicken&Rice Formula,

25    percent protein, 3 percent fiber, $7.99 Pro Plan Adult Lamb&Rice Formula,

28 percent protein, 3 percent fiber, $7.99 Pro Plan Adult Turkey&Barley Formula,

26    percent protein, 3 percent fiber, $8.49 (Source: www.petsmart.90m.)

A dog breeder wants to make at least 120 pounds of a mix containing at least 27 percent protein and at least 3 percent fiber. How many 8-pound bags of each dog food variety should the breeder buy in order to minimize cost? (Round prices up to the nearest dollar.)