唔該！幫幫忙解答我以下2個問題唔該!

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唔係好明個問題同"答案"' X! e9 h) c' Y6 x
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1. http://nz.youtube.com/watch?v=lj3iNxZ8Dww&feature=related
/ C( Y$ H' S6 _- m" j. ~: ^, Q8 EAimee 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?"5 U. h5 Z/ Y+ h* O, M% N- B

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3 O* t  K3 X/ w- Y1 m; z+ _Caitlin 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."6 L) A8 g. g4 m! k% `
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2. http://nz.youtube.com/watch?v=itjlj6i9XFo
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Q:"How many feet are in 2 1/2 yards?9 k  X2 m' f% I$ p  D  r" @1 a
A:"78"
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) L7 v) I. }- p9 ?  y  M$ E3 iWHY NOT IS 7.5? I THINK IS 3 FEETS EQUAL 1 YARD?