34. One pipe discharges 63 gal. per minute, and another discharges 5 gal. per minute. How long will it take to empty a tank whose capacity is 600 gal.?

35. If to a disinfecting solution is added 12 parts of water, what fraction represents the strength of the mixture?

36. On a plan drawn on the scale of in. to a foot, what is the area of a lot whose frontage is 331 in. and whose depth is 48 in.?

37. 7.7 is the product of four factors, three of which are 1, 3.08, and 2.5. What is the fourth?

38. Which covers the greater space, a tile 6 in. square, or a tile containing 6 sq. in.? How many times the smaller is the larger? What part of the larger is the smaller?

39. Mrs. Hovey bought two remnants of silk; one lacked 9 in. of being 2 yd., and the other 6 in. of being 14 yd. What was the total number of yards bought?

40. A heating apparatus is warranted to supply 30 cu. ft. of fresh air per minute for every person in the room. If the room is 30 ft. long, 25 ft. wide, and 12 ft. high, and contains 40 persons, how often must the air in the room be renewed?

41. How many 500-lb. bales of cotton can be harvested from a field of 168 A., if the average yield per acre is 240 lb. ?

42. An ice boat sails 18 mi. in 1 hr. 3 min. What is the rate per minute? How long does it take to go a

43. A farmer raised 900 bu. of beans. One dealer offered him 4 per pound, and another dealer offered $2.40 per bushel of 60 lb. Which was the better offer? By how much?

44. From the sum of 64.007 and 3.02 take the difference between 30.04 and .0607.

45. What must be added to the sum of .0105 and .604 to make one whole one?

46. Divide the sum of .03125 and .01875 by their difference.

47. Under a street 1320 ft. long there is laid a telephone cable consisting of 48 wires. How many miles of telephone wire in the cable?

48. Washington was born Feb. 22, 1732. Franklin was born Jan. 17, 1706. How old was Franklin when Washington was born?

49. When steel rails are manufactured for $13.50 per ton, and sold for $28 per ton, a profit of $26,100 on one sale represents the sale of how many tons?

50. A block of stone 4 ft. x 3 ft. x 5 ft. is used as a watering trough. A place 2 ft. 6 in. long, 1 ft. 8 in. wide, and 1 ft. deep is hollowed out of the top. How many cubic feet of stone in the trough? How many gallons of water will the top hold?

51. A quart of floor varnish will cover a space of 150 sq. ft. How much will it cost at $2.80 per gallon to varnish two floors whose dimensions are 18 ft. by 15 ft., and 15 ft. by 12 ft. ?

52. A reservoir is 60 ft. 8 in. long and 48 ft. 4 in. wide. To make some repairs it is necessary to lower the water 15 in. How many cubic feet must be drawn off?

53. Wishing to measure a field, a boy used a pole which ne supposed to be 10 ft. in length. He found the field to be 180 ft. by 90 ft. He afterwards found his measure to be 9 ft. long. What were the real dimensions of the field?

54. How many dress patterns of 12 yd. each can be cut from a piece of goods containing 85 yd.? What will be the length of the remnant?

55. By what must you multiply the sum of 40.4 and 4.04 to get 4444?

56. What is the capacity in gallons of a tank 24 in. long, 11 in. wide, and 14 in. deep?

What

57. On a certain day the sun shone from 9:45 to 11:30 A.M., from 1: 20 to 2, and from 2: 50 to 3: 25 P.M. part of the 24 hours did the sun shine?

58. At 16 per square yard, what will it cost to paint a kitchen floor 15 ft. 9 in. long and 12 ft. wide?

59. When a dealer buys 28 bu. of peas at $1.20 per bushel and 8 bu. are found to be worthless, for what must he sell the remainder per peck to get his money hack?

60. By selling a shopworn book for $1.20 a dealer sacrifices 75%. What was the cost?

61. By what must you divide the difference between .015 and .15 to get 13.5 for a quotient?

62. How many paving stones 8 in. square will be required to pave a street 20 rd. long and 60 ft. wide?

1. Read aloud each of the above numbers, then write each in words.

2. Find the sum of the above numbers, and write the answer in words.

The next group beyond millions is the billions' group.

3. Read 8764321427.

Separating into groups, we have 8,764,321,427. We read, eight billion seven hundred sixty-four million three hundred twenty-one thousand four hundred twenty-seven.

Millionths

Separate into groups, read aloud, and then write in words:

4. 3762425100 5. 15493762449 6. 156437289452 7. 9037008643 8. 96007625800 9. 873600708509

Write in figures:

1. Three billion two hundred seventeen million four hundred sixty-four thousand nine hundred seventy-six.

2. Four billion six hundred million forty thousand three hundred.

3. Sixty-seven billion eight hundred thirty-two thousand ninety.

4. One hundred eighty billion two hundred sixty million.

5. Seven hundred ninety-five billion two hundred eighty-four thousand.

Read:

1. At one time there were in the state of New York 137 savings banks with 2,760,343 depositors, having total deposits of $1,405,239,941.56.

2. In the year 1909 there were imported into the United States 4,084,921,078 pounds of sugar valued at $96,554,998.

3. The total income of all the railroads in the United States in one year was $2,393,805,989, and the total expense of operating was $1,699,547,896.

NOTE. Practice in reading and writing numbers should be given frequently.