TIle only remaining constraint deals with keeping the demolishition/construction cost within the
allowable budget-that is,
(Construction and demolition cost) :5 (Available budget)
Expressing all the costs in thousands of dollars, we get
The complete model thus becomes
Maximize z = IOOOxl + 19OOx2 + 2700x3 + 34OOX4
subject to
.18xl + .28X2 + .4x3 + .5X4 - .2125x5 :5 0
X5 :5 300
- .8Xl + .2X2 + .2X3 + .2X4
.lx( - .9x2 + .lx3 + .lx4
.25xl + .25x2 - .75x} - .75x4
:50
:50
:50
50Xl + 70x2 + 130x3 + 160x4 + 2X5 :5 15000