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"$ Y6 Q% @$ l- t7 ]9 O: ^

  Q' F" Y* t! J' x; m- _+ j- L1. http://nz.youtube.com/watch?v=lj3iNxZ8Dww&feature=related  R/ X& K6 s( z- m5 m; m
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?"6 U% D0 G3 O0 U; [9 U
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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."$ ^1 O0 u1 o6 L6 a5 p: I8 Q; ^3 k

1 x6 }+ D2 y& q& o2. http://nz.youtube.com/watch?v=itjlj6i9XFo
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5 I5 b  f% `8 ~1 l  o! ~Q:"How many feet are in 2 1/2 yards?5 N( y: }7 W9 N. W% _
A:"78", ^7 q) k3 ]$ B/ `

9 ~6 z6 P" D0 H, ~+ N$ jWHY NOT IS 7.5? I THINK IS 3 FEETS EQUAL 1 YARD?