A farm consists of 600 hectare of which 500 hectare will be planted with corn,barley and wheat, according to these conditions.
1) At least half of the planted hectare should be in corn.
2)no more than 200 hectare should be barley.
3) The ratio of corn to wheat planted should be 2:1
It costs birr 20 per hectare to plant corn,birr 15 per hectare to plant barley and birr 12 per hectare to plant wheat.