原帖由 prozzy 於 2007-5-18 23:05 發表。  3 {# a5 r6 h7 E9 S
the answer is -$97 for sure.
' A* S: z. Z! F! H: V+ c, i公仔箱論壇Think about it this way
: b5 E! t2 m' v% d: K& z) i& B1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)TVBNOW 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。4 w1 M6 M; m3 W
2) Now, the owner discovered that the 100 bucks is fake. You can th ...
6 a* F1 {' I. y' k, ?, z, Q) C l公仔箱論壇 公仔箱論壇. a5 y& h5 N5 a' r
1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong4 o6 \( ]6 Z1 W9 s0 c+ x
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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.5.39.217.77:8898( v1 U5 U! ?( O) j4 K+ m
4 Q, {; N4 v) {2 E8 }TVBNOW 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。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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