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"$ A5 |/ C) x) L0 K4 g
$ Q. \- t- I: ^
1. http://nz.youtube.com/watch?v=lj3iNxZ8Dww&feature=related# M4 ~9 s6 }: J7 u  I2 Q
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?"
7 p2 m* x4 M3 |9 f% B, V
8 o) s- ^5 {/ i( _; }" H/ u3 [7 q
+ e3 c7 T6 J3 kCaitlin 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."
4 N1 z7 X1 L- r5 f8 N5 c' ?. L
5 t) |5 s$ q! l: e6 |* G0 N3 y) F2. http://nz.youtube.com/watch?v=itjlj6i9XFo3 j8 Q5 P" u4 _# J9 T5 p" J# _/ i' b
6 |6 O8 G' u/ v; \
Q:"How many feet are in 2 1/2 yards?# m+ h2 c6 R) Y5 P1 Q) G5 R
A:"78"6 h% u. ^  X) I. g" s3 p
) G$ p* b3 C% R
WHY NOT IS 7.5? I THINK IS 3 FEETS EQUAL 1 YARD?