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.)

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 %