唔該！幫幫忙解答我以下2個問題唔該!

xylitol25

唔係好明個問題同"答案"
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. i: h% \) l" D& c1. http://nz.youtube.com/watch?v=lj3iNxZ8Dww&feature=related
9 ^5 ?' s8 S0 u  v; P+ |" b9 I+ CAimee Teegarden: "Recent polls have shown a fifth of Americans can't locate the U.S. on a world map. Why do you think this is?"# T8 v& }1 I& g) D; Z

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9 D/ G& b* d0 Y7 P0 J& z" ^" u6 ^( ACaitlin Upton: "I personally believe that U.S. Americans are unable to do so because, uh, some, people out there in our nation don't have maps and, uh, I believe that our, uh, education like such as, uh, South Africa and, uh, the Iraq, everywhere like such as, and, I believe that they should, our education over here in the U.S. should help the U.S., uh, or, uh, should help South Africa and should help the Iraq and the filter-074 countries, so we will be able to build up our future, for our children."9 r- h3 o8 O7 ]

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Q:"How many feet are in 2 1/2 yards?
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WHY NOT IS 7.5? I THINK IS 3 FEETS EQUAL 1 YARD?