7. Draw a graph similar to the one found in example 4, which will show approximately the following family expendi

Is the balance which is saved, represented on the graph?

8. On a farm of 320 acres the following percentages of investment are made:

9. The following is a graphical representation of the "Mean Monthly Temperatures" for certain towns in Oregon as shown by the Oregon Agricultural College.

1. What towns have the same March temperature?
2. Which town has the coldest January temperature?
3. What is the coldest temperature recorded?

10. Represent in a way similar to that used in example 9 the "Mean Monthly Rainfall" as shown in the following statistics:

Jan. Feb. Mar. Apr. May June July Aug.

Sept. Oct.

Nov. Dec.

Town
A

10 in. 8 in. 7 in. 5 in. 4 in. 2 in. in. in. 2 in. 51 in. 8 in. 7 in.

Town

6 in. 5 in. 4 in. 2 in. 2 in. 1 in. in. in. 11⁄2 in. 3 in. 6 in. 6in.

B

Town
C

1 in.

1 in. 1 in. in. 1 in. in. in. in. 1 in. 1 in. in in.

MISCELLANEOUS PROBLEMS

GROUP 1

1. Find the prime factors of 7892, of 5280, and of 754. 2. Find the factors of c + cr, of 6x + 6 y, and of pr + p. 3. Find the G. C. D. of 126, 140, and 168.

4. A farmer has 4 farms containing respectively 160 A., 240 A., 280 A., and 300 A. If he divides the farms into equal parcels containing the largest number of acres possible, how many acres will there be in each parcel?

5. Find the L. C. M. of 16, 64, 80, 144.

Use cancellation in the following.

6. Divide 78 x 96 x 54 x 160 by 26 x 16 x 56 x 72.

7. Divide 121 × 66 × 100 by 11 × 62 × 16.

8. A man bought a piece of ground 380 rd. long and 140 rd. wide, paying $125 an acre.

How much did it cost him?

9. A man buys a plot of ground 100 rd. long, lying between two streets 335 ft. apart. How much does it cost him at $500 an acre?

10. How many cords of wood are there in a pile 70 ft. long, 10 ft. high, and 6 ft. wide?

GROUP 2

1. Solve mentally, 6 × 61; 550 × 550;

2 × 8.

2. Add 941, 1521, 7361, 552, 921, and 14.5.

3. Multiply 3624 by 563.

4. Divide 87.478 by 3.84.

5. Divide 94358.13 by .18%.

.85 x .65;

6. Divide 15 by .121; by .16; by .111; and by .621.

7. Extend and foot the following bill:

203 yd. muslin @ 11

197 yd. cotton goods @ 51

201 yd. madras @ 17¢ 108 yd. denim @ 131

216 yd. silk @ 92¢

8. Extend and foot the following bill :

72 lb. cheese @ 1719 113 lb. butter @ 251 . 203 lb. live geese @ 12 63 lb. ducks @ 131.

9. I bought 348 eggs for $4.35, and sold them at 24¢ per dozen. How much did I gain?

10. How much will 4 bu. of apples cost at 25¢ per half peck?

GROUP 3

1. What aliquot part of 1123 is 121? What part of is? 2. What fractional part of a number is the number plus of itself. What fractional part of 200 is 275? 3. What is the cost of five 60-lb. tubs of butter at 331 per pound?

5. After making the proper form, extend and foot the following bill:

On July 10, 1913, Howe Bros. sold to M. S. Scott, 31 dozen 1-qt. pans 68" x 21", at 22¢ per dozen; 15 11-qt. pans 73" x3', at 33 per dozen; 5 wash boilers 225" x 12", at $13.50 per dozen; 9 8-qt. galv. pails, at $1.35 per dozen; 6 12-qt. pails at $1.75 per dozen.

6. After making the proper form, extend and foot the following bill:

On Oct. 21, 1913, the Richardson Rug Co. of Chicago, sold to McAllister and Co., Vincennes, Ind., 24 Axminster rugs 27′′ × 54", at $1.50 each; 18 Axminster rugs 30′′ × 60′′, at $3.25 each; 9 Wilton velvet rugs 36" x 72", at $2.75 each; 16 Tapestry Brussels rugs 27" × 54", at $.75 each; 24 Body Brussels rugs 6' x 9', at $12.50 each; 6 Body Brussels rugs 9' x 12', at $20 each; 44' of hall runner 27" wide, at 331 per ft.

7. The interest on $250 for 60 da. is $2.50. Find the interest for 45 da.; for 75 da.; for 130 da. ; for 190 da.

Make the extensions mentally, and find the total amount in each:

1. A man works overtime 1 hr. and 15 min. each day for 3 da., and 1 hr. and 40 min. each day for 5 da. At 36 per hour for overtime, how much extra has he earned in the 8 da.?

2. A race horse trots a mile in 2:04. does it travel in 10 sec.?

How many yards

3. A railroad gains in elevation 1232 ft. in a distance of 6 mi., 3520 ft. What elevation is gained per mile?

4. An automobile circles a half-mile How many feet does it travel per second? per hour?

track in 44 sec. What is its speed

5. A train travels a mile in 52 sec. What is its speed per hour?

6. A dealer bought 22 gal. and sold it 5¢ per glass of pt. 1

of milk at 13¢ per gallon, What is his gain?

7. I owe £13 88. 7d. in England, 1000 francs in France,