唔該！幫幫忙解答我以下2個問題唔該!

xylitol25

唔係好明個問題同"答案"$ |/ V% _* B# K: E: B% d

, M3 R) Q& P% y9 v- ?+ F6 w1. http://nz.youtube.com/watch?v=lj3iNxZ8Dww&feature=related8 y, G, c5 k3 _: P
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?"
- ?4 j8 d  |) O! D3 N- p6 m9 h
: b% W- i2 v1 |' J7 O
# w2 x2 @% w$ o6 q  d2 [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.". ?( O* Q2 l. z7 P$ ]

5 {) e$ y" s. X0 R# x5 T# x9 [2. http://nz.youtube.com/watch?v=itjlj6i9XFo
5 W" W- k% g3 C6 D# D- k' @: S7 d6 k$ c
Q:"How many feet are in 2 1/2 yards?& U( C" f; M$ c, r( V' R* V
A:"78"" z' N; S( `  o' y
0 {, {6 d2 W! E- B* y+ s
WHY NOT IS 7.5? I THINK IS 3 FEETS EQUAL 1 YARD?