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THE NEW STUDENTS REFERENCE  WORK                                 2187

LATHS AND SHINGLES.

Laths are 4 ft. long, l1/^ in. wide, and are usually put up in bundles of 100 each.

Allowing for waste, a bundle of laths will cover 6 sq. yd.

Lathing is estimated by the sq. yd. % of the area of all openings is deducted.

Shingles are sold in bunches of 250 each. Dealers will not sell part of a bunch.

Four bunches, or 1,000 shingles, laid 4 inches to the weather, will cover 100 square feet.

EXEKCISE 29.

1.   How many bundles of laths will be required for the ceiling of a room 18 ft. long and 15 ft. wide f

2.   What is the cost of lathing a room 15 ft. long, 12 ft. wide, and 9 ft. high? There are two doors 6% ft. by 3% ft., and two windows 6 fta by 3i/2 ft.

The laths cost 40c a bundle, and the workman charges 20c a bundle for his labor.

3.   How many shingles will be required to shingle the roof of a house 38 ft. long, if the rafters are 22 ft. long?

2 (38X22) =1672 sq.ft.

1672 sq. ft.— 100 = 16.72 squares.

16.72 squares will require 16% M. or 67 bunches of shingles.

EXERCISE 30.

1.   I bought 180 bbl. of flour at $5.60 per bbl., and sold the whole for $1,297. How much did I gain?

2.   I bought a farm of 135 acres at $46.50 per acre, and sold the farm for $8,575. "What did I gain or lose?

3.   A farmer bought 24 head of young cattle for $372. He kept them for 4 mo. at an expense of $2.50 a head per month, and sold them at $31.50 each. How much did he gain?

4.   A merchant bought 750 bu. of potatoes at 48c per bushel. Allowing 2% bu. for waste, how much will he gain by retailing the rest at 18c a peck?

5.   A farmer has 32 apple trees which bear on an average 5 bbl. each. He hires 3 men for a week at $1.50 per day. He pays 25c each for the barrels, and lOc a barrel for transportation. He sells them for $3.25 a bbl. How much does he make ?

6.   A lumber dealer bought 45,500 ft. of lumber at $22.50 per M.   He sold 26,000 ft. at $31.50 per M., and the remainder at $27.50 per M.   How much did he gain ?