原帖由 prozzy 於 2007-5-18 23:05 發表。 & ?( }4 s% T; L" i) J6 t
the answer is -$97 for sure.
2 @0 b# S L ?# u4 [# @; tThink about it this way
s4 {8 g" y$ ~( x- x/ f8 L6 f公仔箱論壇1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
5 V a+ d$ h$ K$ [( J. [2) Now, the owner discovered that the 100 bucks is fake. You can th ... tvboxnow.com- F0 t; O; ` Q& P2 P0 l
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6 z' |* H1 Z8 E1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
3 m+ z) y, h9 Y) r0 Z9 Stvboxnow.com
$ j2 E" L# s( z5 _tvboxnow.comthink 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: j- x1 I- Q1 |1 U& ~
, c4 h7 [3 g6 U- ]! i& oTVBNOW 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. |