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6 February, 12:33

In a certain year, 86% of all Caucasians in the U. S., 77% of all African-Americans, 77% of all Hispanics, and 81% of residents not classified into one of these groups used the Internet for e-mail.

At that time, the U. S. population was 64% Caucasian, 10% African-American, and 12% Hispanic.

What percentage of U. S. residents who used the Internet for e-mail were Hispanic?

(Round your answer to the nearest whole percent.)

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  1. 6 February, 14:54
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    Answer: 0.0924%

    Step-by-step explanation:

    In a certain year,

    86% of all Caucasians in the U. S. used the Internet for e-mail.

    77% of all African-Americans, used the Internet for e-mail.

    77% of all Hispanics, used the Internet for e-mail and

    81% of residents not classified into one of these groups used the Internet for e-mail.

    Let x = the population of the US at that time.

    population of Caucasian was 64% - = 0.4x

    population of African - American was 10% = 0.1x

    population of Hispanic was 12% - = 0.12x

    Percentage of U. S. residents who were Hispanic and used the Internet for e-mail = 77% of all Hispanics.

    Total number of Hispanics = 0.12x

    Percentage of U. S. residents who were Hispanic and used the Internet for e-mail

    = 77/100 * 0.12x = 0.77 * 0.12x

    = 0.0924 %
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