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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& K- G+ ~; o3 V' D: y0 [7 o- X1. http://nz.youtube.com/watch?v=lj3iNxZ8Dww&feature=related1 U$ d1 V) r! x# |
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 M- Y; Q/ _2 w; H

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2 d1 p/ c/ S9 U3 L5 lCaitlin 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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2. http://nz.youtube.com/watch?v=itjlj6i9XFo
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Q:"How many feet are in 2 1/2 yards?3 k8 k5 l; i8 t: z6 s0 w
A:"78"0 S# q2 p( ]- I7 A2 H) C

( W2 b  m6 ?$ ^+ K9 gWHY NOT IS 7.5? I THINK IS 3 FEETS EQUAL 1 YARD?