skybirds

原帖由 prozzy 於 2007-5-18 23:05 發表。 " F( n  L0 A/ z3 J6 ]
the answer is -$97 for sure. 公仔箱論壇. i0 @$ N* L3 _4 B! n5 ^, F
Think about it this way " Z9 H7 I6 Q' d' {! A4 Q" r
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)5.39.217.768 q+ K0 k: a9 X
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1 i3 s& j& ~& v" A* E9 n

- D$ A. c7 m) ]- Y1 m7 Tthink 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.

skybirds

??? 369258 ? 2007-6-28 23:29 ??? tvb now,tvbnow,bttvb8 m  |( p. V3 T' w. [

6 S( I. c+ X0 R公仔箱論壇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。8 x& a$ ~/ z3 V( W
dun forget that guy, not only the $18 dollars product he got on hand, he also got $79 dollars on this hand, he paid a fake 100 dollars bill, it means he paid nothing, and the boss gets nothing too, so u need to add 79 dollars to the total.

230km/hr

97

joey80

179+18TVBNOW 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。5 _2 E; T/ N* \( L) f

1 s; }" O* k2 Wtvb now,tvbnow,bttvb[ 本帖最後由 joey80 於 2007-7-11 07:08 AM 編輯 ]

skydn

118

mkcjojo

??

fisherdai

18+79=97

wuchingching

not 97 ma ?

mibird

197

kent8118

Thanks for sharing!!!