原帖由 prozzy 於 2007-5-18 23:05 發表。 
- O# p2 I- {5 ]5.39.217.76the answer is -$97 for sure. 公仔箱論壇$ N7 H1 C7 p% q9 W
Think about it this way
( V0 H+ ?( C+ O; k0 A, r5 M5.39.217.761) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18): J- ^& S5 W- a0 c$ @& P% U
2) Now, the owner discovered that the 100 bucks is fake. You can th ...
5.39.217.761 v" L" V0 O+ Q5 l8 T2 H- L2 }
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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
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: c5 r! l8 d6 @0 ^tvb now,tvbnow,bttvbthink 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.
) d* }' r6 b- H# x" b. ]% kTVBNOW 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。
# `" _, j" C5 \9 w# Dtvb now,tvbnow,bttvbI 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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