# biere
var x1>=0;
var x2>=0;
maximize z:15*x1 + 20*x2;
subject to
mais: 2.5*x1 + 7.5*x2 <= 240;
houblon: 0.125*x1 + 0.125*x2 <= 5;
malt: 17.5*x1 + 10*x2 <= 595;
solve;
display z,x1,x2;