The researcher performs the experiment to test the hypothesis which involves nutrients niacin and retinol. She feeds one group of laboratory rats a daily diet of precisely 30.63 units of niacin and 27,730 units of retinol. She utilizes two kinds of commercial pellet foods. Food A contains 0.11 unit of niacin and 130 units of retinol per gram. Food B has 0.27 unit of niacin and 70 units of retinol per gram. How many grams of every food does she feed this group of rats each day?