/* Objective function */
max: 30 x1 + 40 x2 + 35 x3;

/* Variable bounds */

sec: 2 x1 + 3 x2 + 4 x3 <= 300;
skl: 2 x1 + 4 x2 + 3 x3 <= 400;
boj: 3 x1 + 2 x2 + 3 x3 <= 300;
sst:  -x1        + 3 x3 <=   0;
uku:   x1 +   x2 +   x3 >= 120;