原帖由 prozzy 於 2007-5-18 23:05 發表。  + e4 ~. G8 b) O5 z
the answer is -$97 for sure. 5.39.217.765 K/ C* j) W* J2 {6 }( u6 z$ ]) Y3 S* Q
Think about it this way
; c" _) A- b/ [/ v3 i公仔箱論壇1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
/ z$ o0 h9 t. M4 H( p" q* r R dtvb now,tvbnow,bttvb2) Now, the owner discovered that the 100 bucks is fake. You can th ...
8 O! v: y% L* j4 y. y公仔箱論壇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。 F4 U7 p9 X9 T! T0 W8 P& }
公仔箱論壇/ l$ @3 h+ W$ m+ J# l! x( O" s! h
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.
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* g) F b2 d' ]: Y: I% @tvb now,tvbnow,bttvbI 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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