In a certain year, 87% of all caucasians in the u. s., 73% of all african-americans, 73% of all hispanics, and 83% of residents not classified into one of these groups used the internet for e-mail. at that time, the u. s. population was 68% caucasian, 11% african-american, and 13% hispanic. what percentage of u. s. residents who used the internet for e-mail were hispanic? (round your answer to the nearest whole percent.)