Table 6 Comparison of optimum results of Model-2

FISM

273.40

330.07

$x_{121}=1.34$, $x_{122}=7.16$, $x_{131}=5.51$, $x_{212}=10.51$

Convex combination

252.1

344.20

$x_{111}=6.96$, $x_{121}=8.51$, $x_{131}=5.51$, $x_{212}=3.55$

Global criteria

259.06

337.24

$x_{121}=8.51$, $x_{131}=5.51$, $x_{212}=10.51$, GC = 0.0514