A researcher performs an experiment to test a hypothesis that involves the nutrients niacin and retinol. She feeds one group of laboratory rats a daily diet of precisely 41.4 units of niacin and 1600 units of retionl. she uses two types of commercial pellet food. Food A contains 0.24 units niacin and 10 units of retinol per gram. Food B contains 0.58 units of niacin and 20 units of retionol per gram. How many grams of each food does she feed this group of rats each day? Hint! .24x+.58y=41.4