Minimize Z = 16 x1 + 18 x2 + 21 x3
Subject to,
x1 + x2 + x3 = 100 [overall mix]
0.38 x1 + 0.01 x2 + 0.002 x3 >= 0.8% of 100 i.e. 0.8 [Min Calcium]
0.38 x1 + 0.01 x2 + 0.002 x3 <= 1.2% of 100 i.e. 1.2 [Max Calcium]
0.09 x2 + 0.05 x3 >= 22% of 100 i.e. 22 [Min Protein]
0.02 x2 + 0.08 x3 <= 5% of 100 i.e. 5 [Max fibre]
x1, x2, x3 >= 0
In making the feed for animals, the ingredients are given as follows: calcium protein fibre 0.38...