原帖由 prozzy 於 2007-5-18 23:05 發表。  5.39.217.762 b V! u! H! b! M4 B
the answer is -$97 for sure. 5.39.217.765 n1 p; T/ ^! J0 v
Think about it this way
! F: N8 Z* n4 u) d! I5.39.217.761) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
) T& x" N2 G* F. J5 [) E2) Now, the owner discovered that the 100 bucks is fake. You can th ...
7 n9 {: Z- F) K2 J公仔箱論壇 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。; Q6 l8 _, J' }+ L: R" Z
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。! @1 x1 M/ k1 V! |4 P
公仔箱論壇4 X4 N2 o' C/ z( ?+ X
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.5.39.217.76 K, p+ z, j& j4 U! O' |* b( @: |- }
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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 2007-4-9 06:27 PM
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