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"5 @# f% T. w$ J9 G: F7 V  @2 @

9 D; G- |, J6 x# p9 H8 R! v1. http://nz.youtube.com/watch?v=lj3iNxZ8Dww&feature=related
- u; w3 N# L, M$ \/ U. {* Y6 NAimee 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?"
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$ U1 h  Y$ ?# S5 _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."( ]7 Y& k2 i. v- C# `+ `6 V
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2. http://nz.youtube.com/watch?v=itjlj6i9XFo5 H( }7 t1 G# ~0 @
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Q:"How many feet are in 2 1/2 yards?" _/ k8 A* ^1 a$ m, s
A:"78"
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WHY NOT IS 7.5? I THINK IS 3 FEETS EQUAL 1 YARD?