Step 1 model has slightly changed :
« The State decides to implement a regulation policy concerning the use of water and imposes a limit of 7000 m3 per farm. »
Reminder : « A farmer owns 5 ha of land. His family can provide the equivalent of 5 people per year in terms of working time. The number of working days per year and per person is estimated at 100. This farmer can choose between 4 agricultural activities whose costs, yields and prices are shown in the table below. The currency is the rupee.
| ACTIVITIES | Wheat | Rice | Sugar cane | Livestock |
| YIELD (Tons/ha or Rupees/ha for livestock) |
9 | 6 | 18 | 17000 |
| COSTS(Rupees/ha) | 3120 | 5480 | 11360 | 5000 |
| PRICE(Rupees/ton) | 990 | 3276 | 1686 | 1 |
For livestock, the value shown in the yield line directly measures the gross product per hectare. A value of 1 was therefore provided in the price line.
The table below compiles the resource needs for each activity.
| ACTIVITIES | Wheat | Rice | Sugar cane | Livestock |
| Labour(days/year/ha) | 40.5 | 96 | 282 | 159 |
| Water (m3/ha) | 740 | 3000 | 2200 | 1100 |
The objective of the farmer is to maximize the global gross margin. »
Modify the model based on the one you wrote in step 1, or the corrected version (modelEco_familyFarm_1.zip), and answer the questions (click on “Start quiz”).
If you need help and/or to make sure you use the same name for the data : 
The results of the previous model were : 0 ha of wheat, 4.89 ha of rice, 0.11 ha of sugar cane and 0 ha for livestock. What do the new results show ?
