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"
* A/ i, c4 A4 C2 l' n+ o- B2 L5 F, k' W% [: G: V
1. http://nz.youtube.com/watch?v=lj3iNxZ8Dww&feature=related
% }7 @7 V* X; w6 SAimee 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?"( g8 z! o0 u! S( l4 I, ~5 V" g' A

  s* I' h% ~2 \: f3 e3 n
/ h0 I( ]/ e' R  _, Q- W! wCaitlin 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."
; @2 |' K/ s; C: s0 m. }4 \) W
9 m- V4 s& `; L9 a2. http://nz.youtube.com/watch?v=itjlj6i9XFo2 V0 [7 N  k- a& }5 P: W$ J0 q
9 a3 O0 |( L0 o
Q:"How many feet are in 2 1/2 yards?
) v0 G8 m" R6 V' M" ?A:"78"- B2 T. a. f! `; q6 A- z
. [5 ~7 s% A1 j$ u" i6 k
WHY NOT IS 7.5? I THINK IS 3 FEETS EQUAL 1 YARD?