GEKEEAL PROBLEMS 105 



GENERAL PROBLEMS 



120. It is possible to plan work on the farm when the 

 rate at which it is done is definitely known. 



1. In practical demonstration it has been shown that a 

 horse at his best for drawing a heavy load moves at the rate 

 of 2.9 ft. per second. How many miles is this per hour? 



2. It is estimated that a good horse carrying 160 Ib. 

 should be able to trot 7 ft. per second 7 hr. a day. How many 

 miles will he trot in a day ? 



3 . If a man drives from his home to town in 3 hr. at the rate 

 of 4.1 ft. per second for J of the time, and 8.2 ft. per second 

 for the rest of the time, what is the distance to the town ? 



4. If 9 hr. is the actual time per day that a team draws a 

 self-binder, and if the binder cuts a 6-foot strip, what is the * 

 speed of the horses per hour if 14 A. is a day's work ? 



5. If a breaking plow turns a strip 12 in. wide, how 

 many furrows 80 rd. long are turned in plowing 1 A. ? 



6. How many miles does a team walk in breaking 1 A. 

 (55 rd. by 2 j rd.) with a 12-inch plow ? with a 16-inch plow? 



7. If a team travels 16 mi. a day with a breaking plow, 

 how many days' work can a man save in plowing 30 A. (110 rd. 

 by 43 T 7 T rd.) by using a 16-inch instead of a 12-inch plow ? 



8. If a grain binder cuts a strip 6 ft. wide, how many 

 acres of wheat will it cut in traveling 11 mi. ? 



9. Calling 16 mi. an average day's work, how many 

 acres a day will a binder cover that cuts a 6-foot strip ? 



10. How many miles does a team walk in harrowing a field 

 80 rd. by 40 rd. with a 10-foot harrow ? 



11. When a man can cut 12 A. of grass per day, how 

 many acres must he cut that he may rake it the same day, 

 if he rakes twice as fast as he cuts ? 



