Page 241 - Basic College Mathematics with Early Integers

53. How much greater is the fractional part of the 54. How much greater is the fractional part of the
continent of Antarctica than the fractional part of continent of Asia than the continent of Australia?
the continent of Europe?

Objective Find the LCD of each list of fractions. See Examples 12 through 15.

2 6 7 3 1 1 1 1
55. , 56. , 57. - , 58. - ,
9 15 12 20 36 24 15 90

2 3 5 3 1 13 7 5 11 13
59. , , 60. , , 61. - , - 62. - , -
25 15 6 4 14 20 24 7 3 64
23 1 45 2 4 8 3 12 20 12
63. , 64. , 65. , , 66. , ,
18 21 24 45 3 21 56 11 33 121

Objective Write each fraction as an equivalent fraction with the given denominator. See Examples 16 through 18.

2 5 4 3
67. = 68. = 69. = 70. =
3 21 6 24 7 35 5 100

1 1 14 19
71. = 72. = 73. = 74. =
2 50 5 50 17 68 21 126

2 3 5 7
75. = 76. = 77. = 78. =
3 12 2 12 9 36 6 36
The table shows the fraction of goods sold online by type of goods in a recent year. Use this table to answer Exercises
79 through 82. (Hint for Exercises 80, 81, and 82:To compare fractions with the same denominator, simply compare
their numerators.)

79. Complete the table by writing each fraction as an Fraction of All Equivalent Fraction
equivalent fraction with a denominator of 100. Goods That Are with a Denominator
Type of Goods Sold Online of 100
80. Which of these types of goods has the largest 27
books and magazines
fraction sold online? 50
1
clothing and accessories
2
81. Which of these types of goods has the smallest 23
fraction sold online? computer hardware
50
1
computer software
3 2
82. Which of the types of goods has more than of
5 3
3 drugs, health and beauty aids
the goods sold online? (Hint: Write as an 20
5 13
equivalent fraction with a denominator of 100.) electronics and appliances 20
9
food, beer, and wine
20
13
home furnishings
25
3
music and videos
5
office equipment and 61
supplies 100
12 Copyright 2012 Pearson Education, Inc.
sporting goods
25
1
toys, hobbies, and games
2
(Source: Fedstats.gov)
218