原帖由 prozzy 於 2007-5-18 23:05 發表。 
& c# A$ P0 c$ |0 Ytvb now,tvbnow,bttvbthe answer is -$97 for sure.
1 G, A( n [$ D4 _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。Think about it this way tvb now,tvbnow,bttvb+ [6 v5 A, V! c, m) @1 }
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
3 J9 ]3 ~3 M7 y& V- }2 Xtvb now,tvbnow,bttvb2) Now, the owner discovered that the 100 bucks is fake. You can th ... tvb now,tvbnow,bttvb Y) j3 R/ T# [% A
5 `- c- f7 G* K4 P. N' sTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。
: w$ U9 t/ C% V" [. s5 A. ~: |1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrongos.tvboxnow.com8 S- L) @* T( P0 Q$ K/ Y/ A, P$ }8 o' H
tvb now,tvbnow,bttvb+ T, ~; Q& K6 L# Y! ], S5 U
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.
2 M2 f# f. m& H2 f0 H* Q, u4 C, zTVBNOW 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。 公仔箱論壇) R) l7 C# j& D8 v2 H
I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |