170. A board fence 1250' long is to be built around an athletic field. It is 8' high and the boards cost 2 per foot. How much will the lumber, exclusive of the rails, cost?

171. Twelve boxes cost 72 each. How much will 30 boxes cost, if their price is reduced 1/15 on account of the larger quantity?

172. A room 12' X 15' and 8' high is to be ceiled. Allowing \ waste, and no openings, how much ceiling will it need ?

173. If there are 18 rooms, averaging the same area as the above room, and the contract is given to furnish the labor of putting the ceiling on the walls for $2.50 per M, what will the entire job cost ?

174. If it takes 3 lb. of nails per M to lay the ceiling, how many nails will it take for the entire eighteen rooms ?

175. The bottom rail of a door is 9", with a \" groove in one edge and a \\" relish on the other, and has two tenons, each 2 5/8", with a gain between them. How wide is the gain ?

176. How many laths will it take to cover 549 sq. yd., allowing 60 sq. ft. for openings?

177. Allowing 4 1/2" in width, and casings 1 1/2' wide, how wide will the frame be, from outside to outside, for a 14" X 28" four-light window?

Note. - It is the usual custom to allow 5" in width and 6" in height for a four-light window.

178. A board is 10' long and 12 3/8" wide. How many feet B. M. has it ?

179. B does 1/5 less work than A, and receives 10 per hour. How much ought A to receive?

180. Although A does no better work than B, he is more careful in stock cutting and wastes 1/10 less lumber. Should not B expect his pay cut down until he can cut stock more economically?

181. A timber 9" X 13" and 21' long contains how many feet B. M.?

182. In repairing furniture, A and B work together; A is careful, but B destroys a hand screw worth 25. A receives 10 per hour, and B, 8, though neither does more work than the other. How long will B have to work before the difference in his pay equals the price of the hand screw?

183. What should be the distance between the sill and the head stud of a 14" X 28" four-light window ? Allow 6" beyond the glass for the height of the sash, 2" for the thickness of the sill of the window frame, and 2\" between the top of the upper sash and the head stud.

184. How many square feet in the wall and ceiling of a room 12' X 16' X 8' high, making no allowance for openings?

185. If the above room has a light area equal to 1/4 of its wall surface, and glass 14" wide is used, what size of four-light windows should be ordered, and how many, allowing full size of glass for light area exclusive of the woodwork of the sash ? Give total light area in square inches, and the number and size of windows of nearest stock size.

186. How many cubic yards of earth will be removed from an excavation 40' X 60', and 3' deep at one end, and 5' deep at the other?

187. At 12 1/2 per cubic yard, how much must be paid for the work above described?

188. A plank is 2" X 14" X 18'long. How many feet B. M. are there in it?

189. A plank is 14' X 9". How many feet B. M. are there in it?

190. If poplar is worth $40 per M, how much is 963' worth?

191. Five workmen contract to build a barn; they use 6000' of lumber @ $20 per M, 12,000 shingles @ $ 1.75, and hardware, etc., at a cost of $ 15. They each work 60 hr. The contract price was $ 180. How much does each receive for his labor per hour ?

192. How much would they have received if the lumber had cost only $15 per M?

193. How many feet B.M. are there in a timber 9" X 12" and 16' long?

194. Twenty-four tables cost $ 1.50 each; an order was to be placed for a second lot, if they could be figured down to 1/10 less. The estimate was for 1/15 less. What was the estimated price of the second lot?

195. Nine window frames were made at a profit of 1/5, and each cost $1.30. What was the entire cost of the job, including the profit?

196. If a window frame costs $ 1.50, what will be the cost of the window frames in a house with 19 window openings?

197. Students A and B begin a job to get out a lot of small pieces. A picks up all the small pieces he can find around the shop, but B goes to the lumber shed and takes good whole boards. They both receive 8 per hour. The next month one of them has his pay increased 1/4. Which one is it, and what is his new pay?

198. A 14' lumber pile had 2632' in it. It was built up of layers, averaging 4' wide. How many layers had it?

199. How many and what size of window weights will be required to hang 24 windows, each weighing, complete, 24 lb.?

200. What will be the cost of 42 drawing boards 2' X 2' 6", allowing \ waste @ 4 per foot, and 5 hours' labor on each @ 8 per hour?

201. If A and B do a piece of work which cost $3.20 for the labor, and C and D do the same work in 18 hr., at 10 and 8 per hour, respectively, which piece of work cost the more, and how much ?

202. A does a piece of work which costs $ 6.40 for the labor. If he works 10 da. of 8 hr. each, how much does he receive per hour?

203. If a man receives 80 for doing a certain job, and does it in 6 hr., how much will he make an hour?

204. If he does the work in an unsatisfactory manner, and to correct it, works 3 hr. more how much is his pay per hour for the job?

205. If it takes a boy 12 hr. to make a table, and he receives $ 1.20 for labor, how much will he earn per hour?

206. What is the cost of the labor upon a house, if the material cost $896, excavation and cellar, $84, and painting, $40?

207. A man has two lots of land which cost $1000 each. He builds a house on one, and sells the house and lot for just enough to give him the other lot clear. The profit was 1/10 of the cost of the house. For how much did he sell the property?

208. If the bottom of a tank is 5' X 4', how high will the tank have to be to hold 520 gal. of water, estimating 7 1/2 gal. of water to a cubic foot, and allowing the sides to extend 2" above the height necessary to contain the water?