An animal breeder can buy four types of food for Vietnamese pot-bellied pigs. Each case of Brand A contains 35 units of fiber, 40 units of protein, and 40 units of fat. Each case of Brand B contains
140 units of fiber, 120 units of protein, and 120 units of fat. Each case of Brand C contains 245 units of fiber, 200 units of protein, and 220 units of fat. Each case of Brand D contains 420 units of fiber, 360 units of protein, and 340 units of fat.

Question

An animal breeder can buy four types of food for Vietnamese​ pot-bellied pigs. Each case of Brand A contains 35 units of​ fiber, 40 units of​ protein, and 40 units of fat. Each case of Brand B contains
140 units of​ fiber, 120 units of​ protein, and 120 units of fat. Each case of Brand C contains 245 units of​ fiber, 200 units of​ protein, and 220 units of fat. Each case of Brand D contains 420 units of​ fiber, 360 units of​ protein, and 340 units of fat.

hockeychick23 · Answer

How many cases of each brand should the breeder mix together to obtain a food that provides 4305 units of​ fiber, 3600 units of​ protein, and 3780 units of​ fat?