Hi,
I am trying to solve the problem as shown.
sss
I used to following code to solve this:
PROC OPTMODEL; /* declare sets and parameters */ set RESOURCES = /W B S/; set PRODUCTS = /SWEET PROTEIN/; num selling_price {PRODUCTS} = [1.84 3.45]; num cost {RESOURCES} = [0.2 0.4 0.8]; num availability {RESOURCES} = [100 250 50]; num required {PRODUCTS, RESOURCES} = [0.5 0.25 0.4 0.5 0.1 0.25 ]; /* declare variables */ var NumProd {PRODUCTS} >= 0; impvar Revenue = sum {p in PRODUCTS} selling_price[p] * NumProd[p]; impvar AmountUsed {r in RESOURCES} = sum {p in PRODUCTS} NumProd[p] * required[p,r]; impvar TotalCost = sum {r in RESOURCES} cost[r] * AmountUsed[r]; /* declare constraints */ con Usage {r in RESOURCES}: AmountUsed[r] <= availability[r]; /* declare objective */ max NetProfit = Revenue - TotalCost; /*print model formulation*/ expand; /*solve the model*/ solve; /*print parts of the model*/ print NumProd; quit;
but I get wrong answer.
I want to answer the following question:
• the profit (formatted as a $XXX.XX),
• the amount of each type of feed produced,
• a resource usage table showing for each resource: the amount used, the amount available,
the percentage used (formatted as a percentage), and the shadow price.
Please can someone help
num required {PRODUCTS, RESOURCES} = [
0.5 0.4 0.1
0.25 0.5 0.25
];
You can use SAS formats with the PRINT statement:
print NetProfit dollar7.2;
print NumProd;
print AmountUsed availability
{r in RESOURCES} (AmountUsed[r]/availability[r]) percent.
Usage.dual;
Thank you so much for the reply.
I tried using it but I am not getting the answer which I got graphically. I mean Sweet=125 , Protein=150 and optimal value 637.5.Here I am getting Sweet=0 ...please can you fix my code. thanks
num required {PRODUCTS, RESOURCES} = [
0.5 0.4 0.1
0.25 0.5 0.25
];
Just one question please.In the output is the Usage.DUAL is the name for Shadow Price ?
Thank you so much for your help.The code is working with correct answers.....thankssss
Yes, dual values and shadow prices are synonymous:
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