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"; r1 ]$ b+ [; r* C6 G6 S
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1. http://nz.youtube.com/watch?v=lj3iNxZ8Dww&feature=related& H2 N& K* A3 r$ z
Aimee 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?"# u. g" A; E( Y- L$ |+ \
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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."0 J; z9 j( z) I; M, P( i0 g
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2. http://nz.youtube.com/watch?v=itjlj6i9XFo5 M0 q& g4 G; r6 v4 w$ w
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Q:"How many feet are in 2 1/2 yards?5 G- u2 o% F% a7 X
A:"78"
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WHY NOT IS 7.5? I THINK IS 3 FEETS EQUAL 1 YARD?