II. Find the cost of 68 roofing laths averaging 12 ft. long at 65¢ per 100 linear feet. 12. How many bricks laid on the broadest face are necessary to make a pavement 100 yd. long and 8 ft. wide? 13. A debt that was due two calendar months after Dec. 31, 1913, was due on what date? 14. How many acres are there in a tract of land in the form of a square one side of which measures 80 rd.? 15. How many feet of boards 1 in. thick can be sawed from a log 16 ft. long by 18 in. by 18 in. ? 16. Find the weight of a block of Susquehanna granite 8 ft. long, 2 ft. 6 in. wide, and 1 ft. thick, the granite weighing 2.704 times as much as an equal bulk of water. 17. A dealer bought 800 tons of coal at $5 per long ton and retailed it at $6.75 per short ton; what was his profit? 18. A dealer who buys thread at 55¢ per dozen spools and retails it at 5 per spool gains how much on a gross of thread? 19. How many acres are there in a tract of land mile square? 20. How many dust cloths 14 in. square can be made from 7 yd. of material 28 in. wide? 21. Find the cost of 2856 lb. of corn at $0.65 per bushel (56 lb.). 22. Allowing 400 cu. ft. to the ton, estimate the weight of a mow of hay 24 ft. long, 16 ft. wide, and 12 ft. deep. 23. How many square inches of pasteboard are necessary to make a cube 6 in. long? 24. It is estimated that 1300 plastering laths are required for 100 sq. yd. of plastering; at this estimate, how many laths are required in plastering a room 24 ft. long, 18 ft. wide, and 10 ft. high? 25. An avoirdupois pound contains 7000 grains; how many grains are there in an avoirdupois ounce ? 26. How many feet long is a line that is 8 chains long? 27. The total rainfall during the year in Minnesota is about 4 ft. Estimate, correct to the nearest gallon, the rainfall to each square yard. 28. Find the cost of 25,680 lb. of hay at $15 per ton. 29. How much does a man gain who buys 5 T. (2240 lb.) of coal at $6 per ton and retails it at 8 per bucket, 20 lb. to the bucket? 30. At $2.50 per cord, what is the value of a pile of wood 48 ft. long, 6 ft. high, and 4 ft. wide? 31. Estimating a barrel (31 gal.) at 41 cu. ft. is making the estimate too high by how many cubic inches? 32. How many feet of 2-inch planks are required to lay a barn floor 42 ft. long and 16 ft. wide? 33. What is the sum of the angles of a square? of a rectangle? 34. Estimating a bushel of wheat at of a cubic foot, how many bushels of wheat will a bin hold that is 6 ft. x 6 ft. x 4 ft. 6 in.? 35. Over how many minute spaces does the minute hand of a clock pass in a day? 36. How many shingles are required for 240 sq. ft. of roofing, if they are 4 in. wide and laid 6 in. to the weather? 37. A farmer sold 125 bu. of oats which weighed 3750 lb.; the standard weight of a bushel of oats being 32 lb., find the loss in weight per bushel. 38. A rectangular piece of land 120 rd. long requires 320 rd. of fencing to inclose it; how many acres does the tract contain? 39. Find the cost of shipping farm machinery weighing 2648 lb., if the rate charged was 48 per 100 lb. 40. When shingles are selling at $12.50 per 1000, what should be paid for 16 bundles of shingles, 200 to the bundle? 41. How many perches of masonry are there in a wall 33 ft. long, 4 ft. high, and 18 in. thick? 42. How many yards of carpet yd. wide must be bought for a floor 24 ft. long and 16 ft. wide, if the strips are to be laid lengthwise and yd, is allowed on each strip for waste in matching? 43. When hay is bought at $16 per ton and retailed at $1 per bale of 100 lb., what is the profit per ton? 44. A schoolroom should have not less than 15 sq. ft. of floor space per pupil; at this estimate, a room 40 ft. long and 33 ft. wide will provide sufficient floor space for how many pupils? 45. The annual yield of butter fat from 550 cows in Minnesota during a recent year was 102,569.50 lb.; what was the average annual yield per cow? 46. What is the value of 2,722,528 lb. of skimmed milk at 15 per hundredweight? 47. Allowing 1 T. of clover hay, 10 bu. of corn, and 10 bu. of oats as the ration for a cow for 120 da., find the cost of keeping a herd of 20 cows 6 mo. with hay at $15 per ton, corn $0.60 per bushel, and oats $0.42 per bushel. 48. What is the income for June from a cow that gives an average of 22 lb. of milk daily, if this milk tests .035 butter fat, which is sold at $0.32 per pound? 49. Including land rental, labor, and machinery value consumed, the cost of producing wheat in Minnesota was recently shown to be $7.249 per acre. Estimate a farmer's profit on 100 A. of wheat averaging 20.6 bu. per acre and sold at $0.90 per bushel. 50. It is estimated that 2 bu. of corn in the ear (measuring cu. ft. per bushel) will make 1 bu. of shelled A quantity of corn in the ear which fills a box 10 ft. long, 3 ft. wide, and 25 in. deep will make how many bushels of shelled corn? corn. 51. A plasterer estimates that 5 bu. of lime will be necessary for each coat in 100 sq. yd. of plastering. At this estimate, how many bushels of lime are required to give 2 coats of plaster to a room 24 ft. long, 18 ft. wide, and 9 ft. high? GENERAL REVIEW Exercise 60 1. The amount of timber standing in Oregon is estimated at 400,000,000,000 ft., or one sixth of the standing timber of the United States; estimate the amount of standing timber in the United States. 3 2. A piece of wire in. long was divided into 7 equal parts; how of these parts together measure of an many inch in length? 3. A cubic foot of water weighs 623 lb. and ice is 11 as heavy as water; find the weight of a block of ice 5 ft. by 2 ft. by 18 in. 4. What is the value of 102,569.5 lb. of butter fat at 25.92 per pound? 5. Estimating a cubic foot of water at 623 lb., how many tons (2000 lb.) of water will a tank hold that is 10 ft. long, 4 ft. wide, and 5 ft. deep? 6. When coal is being retailed from house to house at 8¢ per bucket of 20 lb., how much more is being paid for it per ton (2000 lb.) than if it were bought for $6.75 per ton? 7. If a miller buys bran at $24 per ton and retails it at 28¢ per bushel (20 lb.), what is his profit per ton? |