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According to a survey, 93 percent of teenagers have used a [#permalink]
12 Sep 2008, 09:12
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According to a survey, 93 percent of teenagers have used a computer to play games, 89 percent have used a computer to write reports, and 5 percent have not used a computer for either of these purposes. What percent of the teenagers in the survey have used a computer both to play games and to write reports?