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A governmental agency needs to decide suppliers for fuel to be used in its n depots. The agency takes bids from m different oil companies.

A governmental agency needs to decide suppliers for fuel to be used in its n depots. The
agency takes bids from m different oil companies. The facility capacity of oil company
i is ai
liters, and depot j demands bj
liters. Suppose that cij is the unit delivery cost
of oil company i to the depot j. The closed form formulation is given as follows:
I ={1,2,..., n} Set of oil companies.
J={1,2,..., m} Set of depots.
xij : The number of unit oil deliver from company i to the depot j
3 of 4
ISL 323 Assignment #2 Dr. Fuat Kosanoglu
M inimizeZ =
Xn
i=1
Xm
j=1
cijxij
subject to
Xm
j=1
xij <= ai i in I
Xn
i=1
xij >= bj j in J
xij >=0i in I and j in J
Solve the problem using GAMS for the given data.
Table 8: Distances, capacity and demand
Depots
Company D1 D2 D3 D4 Capacity
C18010085901500
C29585801001500
C3908095901500
Demand 1000120013001000

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