Stacy Schenk has a nutritional deficiency and is advised by her doctor to take at least 1200 mg of iron, 1050 mg of Thiamin, and 500 mg of Riboflavin. One Ultravite pill contains 20mg of Iron, 5mg of Thiamin, and 2.5mg of Riboflavin, and costs $1.20. One Healthyvite pill provides 5mg of Iron, 7.5mg of Thiamin, and 5mg of Riboflavin, and costs $1.60. What combination of Ultravite and Healthyvite will meet the requirement at lowest cost?