Apsychologist, studying the effects of a good nutrition on the behavior of rabbits, feeds one group a combination of three foods: i, ii, and iii. each of these food contains three additives: a, b and c. the following table gives the percent of each additive that is present in each food. if the diet being used requires 6.76 g per day of a, 24.02 g of b, and 13.70 g of c, find the number of grams of each food that should be used each day.