原帖由 prozzy 於 2007-5-18 23:05 發表。 公仔箱論壇9 s! g: s) ~! K# S' u
the answer is -$97 for sure. 公仔箱論壇! @1 [7 ~+ ?- T# S- K+ G, y/ k
Think about it this way % U A& E& c3 B5 ?
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
4 b( R" ]9 k8 _. pTVBNOW 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。2) Now, the owner discovered that the 100 bucks is fake. You can th ... 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。0 v( Q& P( F& T# |* n8 E
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/ j2 Z; g( |/ s; ?1 { `/ B1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong5.39.217.76: s' i0 d# ?- q3 u( @6 \
7 z7 L1 e, u% ?) n4 X( p& p8 |6 }4 V/ ethink 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 b+ Q) Y8 X6 ]% Vtvb now,tvbnow,bttvb 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。; `, P7 ^- f, @- X7 U; L; F# J
I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |