Question: In a recent USA TODAY Gallup Poll respondents favored Barack Obama

In a recent USA TODAY/Gallup Poll, respondents favored Barack Obama over Mitt Romney in terms of likeability, 60% to 30% (Los Angeles Times, July 28, 2012). The following bar chart summarizes the responses.

a. What percentage of respondents favored neither Obama nor Romney in terms of likeability?
b. Suppose this survey was based on 500 respondents. How many respondents favored Obama overRomney?

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