! Keywords: Distribution / Network / Shipping / Shortest Route / Transportation / Airlines / Communications / Geographic / Petroleum Industry / RailRoad Industry;
! A 3 warehouse, 4 customer transportation model:
!
! XWHC = amount shipped from warehouse to customer
!
MIN 6 XWH1C1 + 2 XWH1C2 + 6 XWH1C3 + 7 XWH1C4
+ 4 XWH2C1 + 9 XWH2C2 + 5 XWH2C3 + 3 XWH2C4
+ 8 XWH3C1 + 8 XWH3C2 + XWH3C3 + 5 XWH3C4
SUBJECT TO
!
! Demand constraints:
C1) XWH1C1 + XWH2C1 + XWH3C1 >= 15
C2) XWH1C2 + XWH2C2 + XWH3C2 >= 17
C3) XWH1C3 + XWH2C3 + XWH3C3 >= 22
C4) XWH1C4 + XWH2C4 + XWH3C4 >= 12
!
! Supply constraints:
WH1) XWH1C1 + XWH1C2 + XWH1C3 + XWH1C4 <= 30
WH2) XWH2C1 + XWH2C2 + XWH2C3 + XWH2C4 <= 25
WH3) XWH3C1 + XWH3C2 + XWH3C3 + XWH3C4 <= 21
END
! The objective should be 161.
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