. Complete arithmetic . , 7, Gf, 0, 28/; No. 4: 7, 7, 7^,7^, 0, 7, 26/; No. 5: 8, 8,, 8, 8, 8, 8, 36/. I 408 VOCATIONAL PROBLEMS. EXERCISE 236 Problems of the Contractor 1. These men have contracted to paper this house. Therooms are IG x 14, 12 x 8, 18 x 15, 12 x 10, 15 x 13,16 X 16, 10 X 6, and 12 x 12. They deduct 50 from thecombined perimeters of the rooms and allow one roll ofpaper-for every 3^ ft. How many rolls do they need? 2. A contractor builds a brick wall 6S ft. 8 in. long, 5 in. high, and 2 bricks thick. Allowing 14 bricks persquare foot of outside surface for a 2-brick wall,
. Complete arithmetic . , 7, Gf, 0, 28/; No. 4: 7, 7, 7^,7^, 0, 7, 26/; No. 5: 8, 8,, 8, 8, 8, 8, 36/. I 408 VOCATIONAL PROBLEMS. EXERCISE 236 Problems of the Contractor 1. These men have contracted to paper this house. Therooms are IG x 14, 12 x 8, 18 x 15, 12 x 10, 15 x 13,16 X 16, 10 X 6, and 12 x 12. They deduct 50 from thecombined perimeters of the rooms and allow one roll ofpaper-for every 3^ ft. How many rolls do they need? 2. A contractor builds a brick wall 6S ft. 8 in. long, 5 in. high, and 2 bricks thick. Allowing 14 bricks persquare foot of outside surface for a 2-brick wall, how muchwill the bricks cost at $ per M ? 3. A man has a contract to put up the four walls of abuilding 80 ft. long, 35 ft. wide, and 78 ft. high. The wallsare to be 18 in. thick, and 750 cu. ft. is to be allowed foropenings. Allowing 22 bricks to a cubic foot, how muchwill the bricks cost at $ per M ? 4. A contractor wishes to build a concrete wall 66 x 8^,and 18 thick. Concrete is J Portland cement, which costs$ a barrel of 400 lb., and the rest is gravel costingdelivered 87^/ a load (cubic yard). A cubic foot
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