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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% c7 q' r6 u2 H1. http://nz.youtube.com/watch?v=lj3iNxZ8Dww&feature=related
" U' Q% d  j, P- yAimee 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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# U3 a0 n* Z3 CCaitlin 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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( c, E2 e! e! l/ @2. http://nz.youtube.com/watch?v=itjlj6i9XFo
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4 q4 w3 b- O/ HQ:"How many feet are in 2 1/2 yards?4 V/ |5 p3 l9 h( ~5 `# P' r9 S: p
A:"78"
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WHY NOT IS 7.5? I THINK IS 3 FEETS EQUAL 1 YARD?