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"
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3 u. C. Q7 N4 ]& v/ P$ ?. P1. http://nz.youtube.com/watch?v=lj3iNxZ8Dww&feature=related# q5 R/ \5 q3 S# c  K: 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."" o5 n' }& p( t% n3 L( m& U+ |

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6 t, m9 R: x7 {/ i: uQ:"How many feet are in 2 1/2 yards?5 {: b, {& e! ~0 o! S
A:"78"
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WHY NOT IS 7.5? I THINK IS 3 FEETS EQUAL 1 YARD?