CHAPTER XX. 

 MISCELLANEOUS PROBLEMS. 



Note. — The data involved in the following problems are con- 

 tained in the statements given on other pages of this book. Pupils 

 will find it necessary to refer back to the tables in order to get 

 the needed facts and figures. The purpose of these problems is to 

 acquaint each pupil with such work, because this is just what he 

 will need to do later when he carries on agricultural operations 

 for himself. Much interest is centered in these problems also 

 because of the reasoning exercised in their solution. 



Nature of the problem. A man owns a farm contain- 

 ing 75 acres. He keeps 4 horses, 12 cows, 6 brood sows ; 

 raises each year 80 fat hogs, and 10 calves which he sells ; 

 he also sells 400 bushels of wheat, 500 bushels of potatoes 

 and various other farm products. He has a two-acre 

 orchard and an acre garden f roin Avhich he gets fruit and 

 vegetables for himself and family. His farm is equipped 

 with a silo, necessary barns and sheds, and farm tools 

 and implements. The milk obtained from the cows is 

 made into butter and sold to private trade, each pound 

 bringing 30 cents the year round. The horses are used 

 for driving and the farm work. Most of the corn, hay, 

 and other grain raised is fed to live stock. 



1. How many pounds of nitrogen, phosphoric acid, 

 and potash are sent away from this farm each year if 

 400 bushels of wheat are annually sent to market? 



2. How many pounds of these three elements are an- 

 nually removed from the soil by the average wheat crop 

 of the whole of your county? 



3. li every pound were returned to the land in ferti- 

 lizer, what would be the cost if nitrogen is worth 20 cents 



