5.6 Posted on July 27, 2021 by Abigail StasonMIN Z = 10X11+15X12+20X13+12X21+10X22+16X23+15X31+7X32+22X33+20X41+22X42+24X43 ST X11+X21+X31+X41>=1000 X12+X22+X32+X42>=3000 X13+X23+X33+X43>=2000 X11+X12+X13<=2000 X21+X22+X23<=1000 X31+X32+X33<=2000