原帖由 prozzy 於 2007-5-18 23:05 發表。 tvb now,tvbnow,bttvb1 @% ]* h5 v) K- q1 L+ U
the answer is -$97 for sure. tvb now,tvbnow,bttvb" y7 d& d- _, n+ H+ Y' J4 O
Think about it this way
* s* D& j, E" @. N8 XTVBNOW 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。1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)% \2 R* ]& K$ ?: d- ^3 t4 T" Q3 T
2) Now, the owner discovered that the 100 bucks is fake. You can th ... 3 u, h. s( n/ E
2 w3 o9 K' v |9 [& @; l公仔箱論壇 5.39.217.765 M# u: Y, j& S4 U3 _% n
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。& I2 @* f _8 D2 J0 X/ y0 o% _1 e
* f+ z5 S: k5 `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.4 e3 X4 v( G+ L7 ?5 x' F2 a
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I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |