原帖由 prozzy 於 2007-5-18 23:05 發表。 
' |) e m* j6 t1 E+ {; B7 l% C3 Uthe answer is -$97 for sure. tvb now,tvbnow,bttvb9 a/ n% Y, \3 f0 u- `1 e8 k
Think about it this way
( D* W) q, s( O1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
# O2 Z3 K4 u' Z公仔箱論壇2) Now, the owner discovered that the 100 bucks is fake. You can th ...
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1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong公仔箱論壇% G8 X c3 D; n9 B) k
$ Q& ~" P: ]5 |3 k2 B公仔箱論壇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.公仔箱論壇0 H1 i6 `2 y6 _1 g3 }
; K1 S# I( z2 g! l+ B7 I! ]% g) e公仔箱論壇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 2007-4-9 06:27 PM
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