ROADS. 



181 



646. Good roads increase the appraisement for taxa- 

 tion by an average amount of $4 an acre and the average 

 tax rate is 1>4 per cent. What is the average annual in- 

 crease of taxes an acre. How much is this increase for 

 a farm of 50 acres? 160 acres? A township six miles 

 square ? 



647. If the average saving in the marketing of wheat 

 is 3 cents a bushel, how many bushels of wheat on a farm 

 of 50 acres will pay the entire increase in taxes? 



Making the Old Roads Better. 



This roadbed was smoothed and slightly rounded with road scraper, and then 

 oiled. After each rain, it is gone over with a road drag to keep it smooth and 

 in good condition. 



648. Carefully made estimates show that the average 

 annual loss per 100 acres, because of bad roads, is >|^7().28. 

 What is the annual loss for the whole country, the num- 

 ber of acres of improved farming lands being 478,452,- 

 000 ? 



649. The estimated average cost of converting the 

 conitnon ])ublir roads of the United States into improved 



