A beef producer is considering two different types of feed. Each feed contains some or all of the necessary ingredients for fattening beef. Brand 1 feed costs 20 cents per pound and brand 2 costs 30 cents per pound. The table below contains all the relevant data about nutrition and cost of each brand and the minimum requirements per unit of beef. The producer would like to determine how much of each brand to buy in order to satisfy the nutritional requirements for ingredients A and B at a minimum cost. Brand 1 Brand 2 Minimum Requirement Ingredient A 4 units /lb 3 units/lb 40 units Ingredient B 5 units/lb 2 units/lb 46 units Cost 30 cents 35 cent