To get the shade of purple paint ordered by a client, you must mix red:blue:white in the ratio 3:5:8. How many fluid ounces of each color do you need to make 1 gallon of paint? (Remember, there are 128 fl. Oz. In a gallon.)
3 + 5 + 8 = 16 parts
3/16 is red 3/16 x 128 = oz of red
5 /16 is blue 5/16 x 128 = oz of blue
8/16 is white 8/16 x 128 = oz of white