Per cent means hundredths. Seven per cent means seven hundredths, 16, or .07. It is written 7%.

How many hundredths of a number is its half? = how many hundredths??? 25? 56?, $?

What per cent of a number is the half of it? +? ? ? ? ? ? ? 20? 25?

400?

10

11

?

? ? }? j?

?

100? 200?

861. What per cent of a number is of it? $? q? 8? 4? it??

9

흉? 응? 흉? ? ? ? ? 읆? 굛? 10

10? 20

20

20 2%? 2? 23?

*? ? ? 3%? 70? 180?

862. 1 per cent of a number is equal to what fraction of it? 2%? 3%? 4%? 5%? 6%? 7%? 8%? 9%? 10%? 12%?

15%? 20%? 25%? 30%? 36%? 40%? 50%? 60%? 75%? 80%? 90%?

864. 3 times a number is what per cent of it? 21 times? 11

times?

16 times? 4 times? 9 times?

TO FIND THE BASE OR THE RATE.

867. Slate Problems.

29. Find 25% of 280.

280 is called the base, 25 is called the rate.

Multiplying 280 by 256, we get 70, which is called the percentage; that is,

30. Find x per cent of 65.

31. If x per cent of 65 is 26, find the value of x.

32. Find 25% of x.

33. If 25 per cent of x is 42, what is the value of x?

34. Increase x by 20% of itself.

35. If x increased by 20 per cent of x equals 132, what is the value of x?

36. Diminish x by 331% of itself.

37. Find the value of x, when x diminished by 33 per cent of itself equals 78.

38. Find x% of .

39. What is the value of x, if x% of } = 31?

40. Find 1% of x.

41. Find the value of x, when 1% of x=

23.

42. What (x) per cent of 65 is 26?

43. 24 is 18 per cent of what number (x)?

44. 250% of what number (x) = 180?

45. What number (x) increased by 25% of itself equals 85?

48. Find the interest on x dollars for 1 year at 51%.

49. What sum at 51% gives a yearly interest of $44? 50. What is 66% of &?

51. What per cent of 88 is 33?

52. Find the difference between of 800 and per cent of 800.

53. Find the selling price of a horse that cost $175 and was sold at 25% profit.

54. How much insurance does a man receive for $12.50 when the rate is 21%?

55. What is 16% of 61?

56. 3 is what per cent of ?

57. What per cent of $389.50 is $124.64?

58. $174.04 is 95% of what sum of money?

59. What number increased by 16% of itself equals 1,276?

60. 984 is 1331% of what number?

61. % of a number is 81. What is the number?

62. An importer paid duties amounting to $386.75. If the duty was 25% of the value of the goods, what was their value?

63. A collector deducts 21% commission, and returns to his employer $745.68. How much did he collect?

64. A commission merchant receives 21% commission for buying grain for a customer. The cost of the grain and his commission amount to $4,223. How much does the grain cost?

65. A capitalist sends a commission merchant $8,670 to invest in cotton and to include commission at 2%. How much does the commission amount to?

66. A commission merchant receives $1,071 to invest in oats after deducting 2% commission. How many bushels of oats at 30 per bushel does he purchase?

Should the commission merchant deduct 2% of $1,071, or 2% of the cost of the oats?

of its value at %. The annual What is the value of the house?

67. A house is insured for cost (premium) is $8.40.

68. What will be the taxes on a house worth $48,000 and assessed at of its value, the tax rate being $18.50 per $1,000 of assessed value?

869. Oral Exercises.

1. 3 is what part of 6?

2. 3 is what decimal of 6?

3. 3 is how many hundredths of 6?

4. 3 is what per cent of 6?

5. 6 is what per cent of 3?

6. What number is 50% of 6?

7. 3 is 50% of what number?

8. 2 is what % of 100?

9. 2 is what % of 200?