(1)设中间两条隔墙与宽平行，宽度=200/x,两条隔墙长度=2*200/x=400/x,400*(2x+2*200/x)+300*400/x+80*200=47200x+350/x=39x2-39x+350=0(x-25)(x-14)=0x1=25m>16m,舍去；x2=14m.[宽度=200/x=200/14=14.29<16m;](2)总造价W=400*(2x+2*200/x)+300*400/x+80*200=800x+280000/x+16000,x=14m,W=47200元;x=16m,宽度=200/x=200/16=12.5m<16m,W=800*16+280000/16+16...
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