7. On April 24, 1906, James J. Hall sold a horse to G. M. Bruce for $150, taking in payment his note for 1 year with interest at 6%. Find the amount of the note at maturity.

8. Mr. Hall (Ex. 7) needed money, so he sold the note to a bank on the same day, the bank discounting it at 6%. How much did Mr. Hall receive for the note?

9. If the note (Probs. 7 and 8) had been discounted at 8% instead of 6 %, what amount would Mr. Hall have received?

10. If the note (Probs. 7 and 8) had been discounted three months after date of issue, or on July 24, 1906, the bank would have deducted interest on the amount due at maturity ($159) for the exact number of days from July 24, 1906 to April 24, 1907 (7 da. + 31 da. + 30 da. + 31 da. 30 da. + 31 da. + 31 da. + 28 da. + 31 da. + 24 da.), or for 274 da. Find the amount which Mr. Hall would have received.

11. A 90-da. note for $500, without grace, dated Aug. 5, 1905, with interest at 5%, was discounted at a bank on Aug. 25 at 6%. Find the day of maturity, the amount at maturity, the bank discount, and the proceeds.

12. A man borrowed $1000 of a bank for 1 yr. at 6%, paying interest in advance. 6% interest in advance on $1000 is equivalent to what rate paid at the end of the year?

266. Review.

1. During a certain school month a boy worked 209 problems, of which 194 were correct. Find the per cent of correct work.

2. A baseball team won 43 games and lost 15 games Find the per cent of games won.

one season.

3. The rent of a house was raised from $30 a month to $35; this was an increase of what per cent?

4. A person bought a house for $6000. The taxes, insurance, repairs, and other expenses connected with the property amounted to $120 a year. For how much a month must the property be rented to net 6% on the investment?

5. A man built two flats costing him $5000 on a lot which cost $2000. He rented one of the flats for $40 a month and the other for $35. The expenses connected with the property amounted to $200 a year. The net income amounted to what per cent on the investment?

6. An electric light meter registered 80,000 watt hours on Oct. 9, and 106,000 watt hours on Nov. 9. Find the amount of the bill for the month at 94 for each 1000 watt hours.

7. A gas meter registered 29,800 cu. ft. on April 24, and 31,800 cu. ft. on May 24. Find the amount of the bill for the month at $.90 per 1000 cu. ft.

8. The population of a certain city was 47,235 in 1900, and 60,624 in 1910. Find the increase per cent.

9. At 65 a sack (100 lb.), what is the price of coal per ton?

10. Find the interest on $2800 from June 8 to Jan. 16 at 6% per annum.

PART IV

FORMS AND MEASUREMENTS*

267. 1. Lines are vertical, horizontal oblique \/

2. These are right angles.

ЈГ

3. A rectangle has four right angles.

4. These are right triangles.

5. These are acute angles. AV

6. These are acute-angled triangles

7. These are obtuse angles.

8. These are obtuse-angled triangles.

9. Perpendicular (p) means at right angles to.

10. These figures have a base (b) and an altitude (a).

11. These lines are parallel.

12. These are quadrilaterals.

b

a

a

b

4

13. These quadrilaterals are parallelograms.

14. These are rectangular

prisms.

*With complete reviews.

and

a

269. Lines.

1. Lines that extend in the same direction and are the

same distance apart are called parallel

lines.

PARALLEL LINES.

2. Suspend a weight by a string. When the weight is at rest, the line represented by the string is called a vertical line.

3. The surface of the water in a tank or a pond is said to be level, or horizontal. A slanting line is called an oblique line.

A vertical line is represented on a page by a line parallel to the sides, and a horizontal line by a line parallel to the top and bottom.

4. Hold your pencil in a vertical position; in a hori zontal position; in an oblique position.

5. Point to surfaces in the schoolroom that are horizontal, vertical, oblique, parallel.

6. Draw two vertical parallel lines on the blackboard; two horizontal parallel lines; two oblique parallel lines.

270. Right Angles.

1. Two lines that meet form an angle, Z. When two lines form a square corner, the angle between them is called a right angle.

2. Draw four right angles.

3. Point to surfaces in your schoolroom that meet at right angles.

ЈГ

RIGHT ANGLES.

4. Two lines that form a right angle are said to be per

pendicular to each other. Draw perpenperpen-e e

dicular lines.

PERPENDICULAR

LINES.

5. Point to lines or surfaces in the schoolroom that are perpendicular to each other.