There were 323232 volunteers to donate blood. unfortunately, nnn of the volunteers did not meet the health requirements, so they couldn't donate. the rest of the volunteers donated 470470470 milliliters each. how many milliliters of blood did the volunteers donate?

Your vet has placed your pet on a diet. the diet is to contain at least 12 mg of fat and at least 14 mg of protein per serving. these requirements are to be obtained from two food sources. source a contains 2 mg of fat and 2 mg of protein per serving. source b contains 1 mg of fat and 3 mg of protein per serving. if source a sells for $1.28 per serving and source b sells for $1.12 per serving, how many servings of each type should be purchased to satisfy the requirements at minimal cost?