原帖由 prozzy 於 2007-5-18 23:05 發表。 
$ [+ v2 ` d1 I* Z! ^" _5 T! @5.39.217.76the answer is -$97 for sure.
4 u7 r. d0 l! c; {- P& NThink about it this way TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。" ]; W/ W* L$ O
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
9 |, T, `5 z7 ~$ D6 R7 qTVBNOW 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 ... ; b. @* z" C+ k0 n1 K" d/ k2 j( w* ~* wTVBNOW 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。
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+ R) d$ o5 [% ?: J( R `5 c$ ~2 h2 L0 x1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong/ M: B$ A+ I' t4 @4 e1 s5 l
. j1 i& q/ t- l+ v4 Tthink 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.
" R4 i% J/ ?7 V7 ETVBNOW 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。
4 n( Z7 t# X2 x+ yTVBNOW 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。I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |