原帖由 prozzy 於 2007-5-18 23:05 發表。 
& y8 Z3 ^4 C/ x/ e2 ]/ ~! {( eTVBNOW 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。the answer is -$97 for sure.
0 b; h1 R8 B( rThink about it this way
* d( [- R8 v' V# T9 n( E Y1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
( w4 v8 m3 `& `0 j- c3 V/ k; L2) Now, the owner discovered that the 100 bucks is fake. You can th ...
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* F7 s* F) y2 Gtvb now,tvbnow,bttvb1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
2 R2 A) T- T8 T# q公仔箱論壇 ( q* W# ?: F% G+ A% J2 |
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.8 B. ?* U; J& a+ ~
公仔箱論壇2 b/ T6 `" B1 `
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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