原帖由 prozzy 於 2007-5-18 23:05 發表。 5.39.217.76; h1 F. v1 a3 h% \
the answer is -$97 for sure.
* Y, R6 k% q' v1 P5.39.217.76Think about it this way 公仔箱論壇0 x0 t: V( y3 b& x- ?. b
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
8 ` U: Z! g D0 m5 e2) Now, the owner discovered that the 100 bucks is fake. You can th ... & T$ X. L6 K E U6 htvb now,tvbnow,bttvb2 C" h; S! `1 g$ I+ Z' P1 L6 y
tvb now,tvbnow,bttvb I9 ]/ O$ A( O& Y. t5 Q
1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
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/ B3 g! n) E( p% T5 T$ `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% D; A* _6 l5.39.217.76 5.39.217.762 t6 u' M9 z5 d; m
I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |