17. $18,000 is divided among three children, the second of whom receives $2,400 more than the first, and the third of whom receives $2,400 more than the second. Find the share of each.

18. The greater of two numbers is 11 more than 3 times the less. Their difference is 33. What are the numbers?

19. A boy spent a dollar for postal cards, 2-cent stamps, and 5-cent stamps. He bought 15 more 2-cent stamps than 5-cent stamps, and 15 more postal cards than 2-cent stamps. How many of each did he buy?

20. A farmer has 88 head of stock-horses, cows, and sheep. He has 17 more cows than horses, and the number of sheep is 22 greater than that of the cows and horses together. How many are there of each?

hundredths,, or .07. It is written 7%.

How many hundredths of a number is its half? = how many hundredths???5? b? q? z?

What per cent of a number is the half of it? +? ? ? ? A? A? ¿? ? ?

400?

861. What per cent of a number is of it? ? ? ? ? 흉? 흉? 흉? 곯? 응? 옯? 응? 응? 굛? 응? 곯? 곯? #? ? ? ? ? 180?

0

00

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? 2 times? 14 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 24%?

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. 3% 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?