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"; ]7 i2 r7 V! Q& e/ ]" V

% r' n! V4 ~4 s' W1 x# y; m" _1. http://nz.youtube.com/watch?v=lj3iNxZ8Dww&feature=related
% ?  ?! A2 L9 n, t8 C& uAimee 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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# K( A, k( e: V3 E, D' rCaitlin 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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* _. n5 w3 X7 a3 F: B9 S7 A2. http://nz.youtube.com/watch?v=itjlj6i9XFo
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" |) A3 V7 Q, Z; F( u  O6 Q6 d" j; OQ:"How many feet are in 2 1/2 yards?" Y3 P6 v) w+ ]' A; V- c- m
A:"78"
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WHY NOT IS 7.5? I THINK IS 3 FEETS EQUAL 1 YARD?