原帖由 prozzy 於 2007-5-18 23:05 發表。  ! t1 {" a9 F1 Z1 o: l, {
the answer is -$97 for sure.
7 k& I6 d% e/ yThink about it this way tvb now,tvbnow,bttvb2 t! [+ q4 ^! |0 @1 h
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
! {4 O- ^$ ^9 u1 i2 b/ @) A8 D% _5.39.217.772) Now, the owner discovered that the 100 bucks is fake. You can th ...
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1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrongTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。+ ?3 j% d0 N9 i( M. U7 J) ?
TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。$ J8 M5 J0 s" Z
think about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.9 C1 n0 P2 f- @' u `/ y- O
5.39.217.77) f, F7 i$ u. x6 }& h
I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |
發表於 2007-7-10 05:18 PM
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發表於 2007-7-11 03:19 PM
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