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"
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* u6 |  x$ N  F( n6 p/ }7 @  z1. http://nz.youtube.com/watch?v=lj3iNxZ8Dww&feature=related9 c/ F0 L; j3 l' W
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?"2 ]1 Z6 a& Q) ?1 l  ?- B

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% @! j6 W- j6 W& f) z: x$ |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."
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- b9 j% Q! o; Z) ^' v2. http://nz.youtube.com/watch?v=itjlj6i9XFo/ J6 R" S  U( @& H$ S
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Q:"How many feet are in 2 1/2 yards?' L9 b" D5 Z3 o- q5 P2 U7 M
A:"78"8 D5 U, C5 r7 G/ z5 {  y( e7 z

, l8 P9 g. w$ P+ H0 a% u6 p; |3 dWHY NOT IS 7.5? I THINK IS 3 FEETS EQUAL 1 YARD?