60. How many bricks laid on the broadest face are necessary to make a pavement 100 yd. long and 8 ft. wide?

61. A debt that is due two calendar months after Dec. 31, 1913, is due on what date?

62. How many acres are there in a tract of land in the form of a square one side of which measures 80 rd.?

63. How many feet of boards 1 in. thick can be sawed from a log 16 ft. long by 18 in. by 18 in., making no allowance for waste in sawing?

64. 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.

65. A dealer bought 800 tons (2240 lb.) of coal at $ 5 per long ton and retailed it at $ 6.75 per short ton; what was his profit?

66. A dealer who buys thread at 55¢ per dozen spools and retails it at 5 a spool gains how much on a gross of thread?

67. How many acres are there in a tract of land mile square?

68. How many dust cloths 14 in. square can be made from 7 yd. of material 28 in. wide?

69. Find the cost of 2856 lb. of corn at $0.65 per bushel (56 lb.).

70. 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. 71. How many square inches of pasteboard are necessary to make a cube 6 in. long?

72. It is estimated that 1300 plastering laths are required for 100 sq. yd. of plastering; at this estimate, how many laths are required to plaster a room 24 ft. long, 18 ft. wide, and 10 ft. high?

73. An avoirdupois pound contains 7000 grains; how many grains are there in an avoirdupois ounce ?

74. How

How many feet long is a line that is 8 chains long? 75. The total rainfall during the year in Minnesota is about 4 ft. Estimate, correct to the nearest gallon, the rainfall to each square yard.

76. Find the cost of 25,680 lb. of hay at $15 per ton. 77. 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?

78. At $2.50 a cord what is the value of a pile of wood 48 ft. long, 6 ft. high, and 4 ft. wide?

79. Estimating a barrel (311 gal.) at 41 cu. ft. is making the estimate too high by how many cubic inches?

80. How many feet of 2-inch planks are required to lay a barn floor 42 ft. long and 16 ft. wide?

81. What is the sum of the angles of a square? of a rectangle?

82. 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.?

83. Over how many minute spaces does the minute hand of a clock pass in a day?

84. How many shingles are required for 240 sq. ft. of roofing, if they are 4 in. wide and laid 6 in. to the weather?

85. 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.

86. A rectangular piece of land 120 rd. long requires 320 rd. of fencing to inclose it; how many acres does the tract contain?

87. Find the cost of shipping farm machinery weighing 2648 lb., if the rate charged was 48 per 100 lb.

88. When shingles are selling at $12.50 per 1000, what should be paid for 16 bales of shingles, 200 to the bale?

89. How many perches of masonry are there in a wall 33 ft. long, 4 ft. high, and 18 in. thick?

90. 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. allowed on each strip for waste in matching?

91. When hay is bought at $16 per ton (2000 lb.) and retailed at $1 per bale of 100 lb., what is the profit per ton?

92. A schoolroom should have not less than 15 sq. ft. of floor space for each pupil; at this estimate, a room 40 ft. long and 33 ft. wide will provide sufficient floor space for how many pupils?

93. 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?

94. What is the value of 2,722,528 lb. of skimmed milk at 15 per hundredweight?

95. 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.

96. 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?

97. 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 a bushel.

98. It is estimated that 2 bu. of corn in the ear (measuring cu. ft. per bushel) will make 1 bu. of shelled corn. 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?

99. 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?

100. Steers should be fed each day hay or its equivalent to the amount of 2.84 lb. for each 100 lb. of their live weight. How much hay or its equivalent should be fed per day to an 860-lb. steer?

GENERAL REVIEW

Exercise 105

(Solve as many as possible at sight.)

1. The several items entering into the cost of maintaining a farm work-horse for a year were recently shown

to be as follows; find the total:

Interest on investment

Depreciation

Shoeing

Feed

Labor

Miscellaneous Expenses

$6.74

4.35

1.45

75.03

11.88

0.29

Total

2. What postage must be paid on a book weighing 18 oz. mailed for delivery within the third zone?

3. A farmer who sows 500 lb. of fertilizer to the acre must purchase how many tons for 12 A.?

4. Find how many bushels of wheat a bin 6 ft. x 4 ft. × 4 ft. will hold, estimating that a bushel of wheat occupies about of a cubic foot.

5. Good wheat will produce about .42 of its weight of finest flour, and in addition .18 of its weight of seconds and .09 of its weight of biscuit flour; how many pounds of each of these grades of flour are produced from a bushel of wheat weighing 60 pounds?

6. A certain horse is 153 hands high; express this height in feet and inches.