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"& A: k( l# a3 p
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1. http://nz.youtube.com/watch?v=lj3iNxZ8Dww&feature=related' x, u2 S+ P& u& N% |' g
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?"3 n) p4 W( l# M6 j1 U

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8 B$ x% c3 p1 @* b; X0 q. 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."- P* q% Z8 B( b- b% f3 O: Q

8 n. }' B9 a+ O0 }8 i% I! B" k2. http://nz.youtube.com/watch?v=itjlj6i9XFo; C8 E. I. F' g' R5 f  Y! s3 ]2 Z2 A0 H
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Q:"How many feet are in 2 1/2 yards?1 b- f$ W- c; k
A:"78"5 V) Y5 F6 l# y. Q3 S6 n
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WHY NOT IS 7.5? I THINK IS 3 FEETS EQUAL 1 YARD?