原帖由 prozzy 於 2007-5-18 23:05 發表。  / P" S) P; B/ g5 v1 Y. H% d
the answer is -$97 for sure.
( a0 ]+ V0 X! S% p# e# GTVBNOW 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。Think about it this way tvb now,tvbnow,bttvb/ R' a' w4 f. Q0 c& T H0 z, g
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)公仔箱論壇6 ~* y' h# C; O3 s
2) Now, the owner discovered that the 100 bucks is fake. You can th ...
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tvb now,tvbnow,bttvb9 A4 @& F/ A0 }
1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
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' R# [8 d2 y4 O+ k; _0 a4 o公仔箱論壇think about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.tvb now,tvbnow,bttvb+ w* [3 V. k. _+ [3 A) Q E
TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。! k$ z' s a A
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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