唔該！幫幫忙解答我以下2個問題唔該!

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唔係好明個問題同"答案"8 q5 W; S. m8 R0 S* {6 k0 y+ E

, H1 u+ b- x  Z: u/ P1. http://nz.youtube.com/watch?v=lj3iNxZ8Dww&feature=related
0 t* y, g$ f+ V2 V3 u$ _3 |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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9 y" T3 I$ f( {6 [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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7 l( O+ e" y5 t2. http://nz.youtube.com/watch?v=itjlj6i9XFo
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$ Y2 Q- H9 W" ?0 d+ uQ:"How many feet are in 2 1/2 yards?
; ]. f4 Y/ b; b6 w; mA:"78"6 w) ^, {0 \- f
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WHY NOT IS 7.5? I THINK IS 3 FEETS EQUAL 1 YARD?