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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7 P9 p8 F) e* |2 B% c4 O1. http://nz.youtube.com/watch?v=lj3iNxZ8Dww&feature=related
; \7 l9 q" F# g/ v- f' ]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?"
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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."  J; h( d, t. H+ o

0 `) N4 S" `+ H/ M  p  y$ s& W2. http://nz.youtube.com/watch?v=itjlj6i9XFo! |3 j; g4 ~( I- k  ^3 R+ G! w
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Q:"How many feet are in 2 1/2 yards?/ Z2 ~! i0 t. F
A:"78". c3 N/ K& V# U+ B- H) V9 q$ l
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WHY NOT IS 7.5? I THINK IS 3 FEETS EQUAL 1 YARD?