原帖由 prozzy 於 2007-5-18 23:05 發表。 
! x- F( {% `$ M4 @2 h9 f; qthe answer is -$97 for sure. 5.39.217.763 @0 g* D- L5 i. I% ]3 Z
Think about it this way
- t, n# m$ Y' x" ]5 z% o) \, t8 G1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)" B. f3 C! [$ l
2) Now, the owner discovered that the 100 bucks is fake. You can th ... : k9 X$ L% ^ k5 D& z2 Jtvb now,tvbnow,bttvb
& [2 m3 A' ?' `# 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。 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。$ [- h7 e d( j" _/ W: }
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。 \7 o: J% \+ q/ e8 Q5 j
5 o$ }" s$ P/ \+ D5 [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, 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.
/ P. t3 w5 @; g公仔箱論壇 tvb now,tvbnow,bttvb- r+ e | s8 Y7 e+ k) x
I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |