Page 471 - Basic College Mathematics with Early Integers

448 C HAPTE R 6 I PERCENT

79. At this writing, 23% of Americans surveyed are in 80. One version of the quarter is made of an alloy of
favor of abolishing the penny.Write this percent as a copper, nickel, and strengthening impurities.About
decimal and a fraction. 8% is nickel.Write this percent as a decimal and a
fraction. (Source: Gallup)

1 23
81. Canada produces of the uranium produced in the 82. In 2008, the U.S. Postal Service handled of the
4 50
world.Write this fraction as a percent. (Source: World world’s card and letter mail volume.Write this decimal
Nuclear Association) as a percent.(Source: U.S.Postal Service)

Canada

83. People take aspirin for a variety of reasons.The most 84. Japan exports 73.2% of all motorcycles manufactured
common use of aspirin is to prevent heart disease, there.Write this percent as a decimal. (Source: Japan
accounting for 38% of all aspirin use.Write this percent Automobile Manufacturers Association)
as a decimal. (Source: Bayer Market Research)

85. In the United States recently, 20.2% of households had 86. In the United States recently, 17.4% of households had
no landlines, just cell phones.Write this percent as a no cell phones, just landlines.Write this percent as a
decimal. (Source: CTIA—The Wireless Association) decimal. (Source: CTIA—The Wireless Association)

In Exercises 87 through 92, write the percent from the circle graph as a decimal and a fraction.

87. Australia: 0.5% 88. Europe: 11%
World Population by Continent
Africa
14.2% Asia
60.6% 89. Africa: 14.2% 90. Asia: 60.6%
South
America
5.8%
North
America 91. North America: 7.9% 92. South America: 5.8%
7.9% Europe Australia Copyright 2012 Pearson Education, Inc.
11.0%
0.5%