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": s% y- _9 f: k. `$ C! S9 d" Q

7 r& m* Q5 {9 Z; U( a; K4 _1. http://nz.youtube.com/watch?v=lj3iNxZ8Dww&feature=related
1 S: }# J; B' x6 |& kAimee 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?"( E3 f2 H( B1 j+ P
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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."! a8 O* O7 ]4 C4 \0 m' v

! m8 v: G4 t4 I0 |- [  T+ F2 V& ?& p2. http://nz.youtube.com/watch?v=itjlj6i9XFo
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7 {9 m! p7 w' NQ:"How many feet are in 2 1/2 yards?
% B5 Q8 @8 i) i+ L; v/ @4 m! v4 I8 ~A:"78"
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WHY NOT IS 7.5? I THINK IS 3 FEETS EQUAL 1 YARD?