原帖由 prozzy 於 2007-5-18 23:05 發表。 
5 v1 M' m9 w. u4 _) o公仔箱論壇the answer is -$97 for sure. tvb now,tvbnow,bttvb0 f6 \# k5 v2 V) c$ j0 E9 R; h$ S+ M
Think about it this way 公仔箱論壇8 ~) L. h: }" I& Q( ]
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
1 H% g1 t4 H1 ~: S; C4 s/ Y3 c- m9 B6 w5.39.217.772) 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
" z6 k) p2 ^# Q! h公仔箱論壇 ) a8 e/ x1 H# |- Y* G8 h
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.
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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. |
發表於 2007-7-10 05:18 PM
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發表於 2007-7-11 03:19 PM
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