A meat market combines ground beef and ground pork in a single package for meat loaf The ground beef is 75 lean 75 beef 25 fat and costs the market 2 10 per pound lb The ground pork is 60 lean and costs the market 1 35 lb The meat loaf must be at least 70 lean If the market wants to make at least 180 lb of mea loaf by using at least 50 lb of its available pork but no more than 460 lb of its available ground beef how much ground beef should be mixed with ground pork so that the cost is minimized How many pounds of each kind of meat should be combined to achieve minimum cost pounds of ground pork The meat market should combine pounds of ground beef and Type exact answers Type integers or simplified fractions