原帖由 prozzy 於 2007-5-18 23:05 發表。 
. u# Z4 ~5 `/ m& X5 _, |* uthe answer is -$97 for sure. tvb now,tvbnow,bttvb: c5 T( j3 ?& P% {; @3 A" y
Think about it this way
' t K. Y5 d Q+ K, @# s1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
. z: z# X) V0 u6 _; e2) Now, the owner discovered that the 100 bucks is fake. You can th ...
6 ~! y h1 h( k! o- @0 t; b
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。3 t% W/ X4 T1 D, e Z2 k
) |3 V7 t. N+ J% A4 q# hthink 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.os.tvboxnow.com5 Z8 h; a# {; Z1 E" J. J9 I( }
9 W* p& s& Q/ \/ [! Y
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
| 
發表於 2007-7-11 03:19 PM
| 
