Adding a constraint to the wheat/maize model

Durée : environ 15 minutes

Download the model primal1.zip. Once you have unzipped it and saved it under another name (for example primal1_approvisionnement.gms), run it using GAMS-IDE. Modify the model in order to add the constraint imposed by the government.

 « A given farm can grow two types of crop : wheat and maize. The area to be cultivated must be determined for each crop, knowing that :
The objective of the farmer is to maximize his income.
Wheat yields 450€ per hectare, maize 1000€.
Wheat requires 25 hours of labour per hectare and per year, and maize 50 hours.
The farm area is 50 ha and the farmer can work 2000 hours a year.

 

Let us imagine that in order to ensure food supplies for cities, the government requires that every farmer cultivate at least 80 ha of cereal crops. »

Once you have run the new model, answer the questions !