hello.
the code i wrote is below i have mistakes error 149,409,140,812 it is a transport model problem i’m a student and i’m trying to learn GAMS how can i fix that? please contact me if you think i have another fault
sets
i truck type /1,2,3/
j dealer/1*8/;
parameters
m(i) 'i the cost of carrying 1 ton of cement carried by the truck ’
/1 0.0353
2 0.0432
3 0.0520/
y(j) 'distance between factory and dealer ’
/1 370
2 592
3 156
4 60
5 110
6 160
7 330
8 444/
t(j) 'amount of demand ’
/ 1 4936
2 4126
3 2428
4 7497
5 5920
6 5748
7 1470
8 3490/
a(i) 'load capacity of the truck i ’
/1 24
2 16
3 10/;
;
variables
z
x(i,j) 'the nuber of trips the truck i will make to its dealer ’
;
equations
cost
restriction1 ‘prevents the amount of cement from exceeding the demand’
restriction2 'prevents the load carried by the 24 ton truck from exceeding the dealer’demand j ’
restriction3 'prevents the load carried by the 16 ton truck from exceeding the dealer’demand j ’
restriction4 'prevents the load carried by the 10 ton truck from exceeding the dealer’demand j ’
restriction5 ;
cost… z=e=sum((i,j),[m(i)x(i,j)]y(j)) ;
restriction1… (24x(i,j))+(16x(i,j))+(10x(i,j)) =e= t(j) ; * error 149,409 409 Unrecognizable item - skip to find a new statement
**** looking for a ‘;’ or a key word to get started again
restriction2x(i,j)… 24x(i,j)=l= t(j); error 140
restriction3x(i,j)… 16x(i,j)=l= t(j); error 140
restriction4x(i,j)… 10x(i,j)=l= t(j); *error 140
restriction5x(i,j)… x(i,j)=g=0;
model number of trips /all/;
solve number of trips using mip minimizing z; *error 812