原帖由 prozzy 於 2007-5-18 23:05 發表。  : G8 { V/ H$ Y0 d3 i, s7 M! {
the answer is -$97 for sure. 9 O' T1 o" I: q- p0 a H
Think about it this way 3 Y6 m8 y. q4 ~
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)5.39.217.76/ C& \/ O2 N% b8 ?0 u3 B1 E
2) Now, the owner discovered that the 100 bucks is fake. You can th ...
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。: e/ L& T# b. v: P
9 i: k9 T1 ]+ t+ C0 @
1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
% g k% J) b r0 F! ~5.39.217.76 ( n9 w: n/ E F- J; ?' S
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.
* e3 Q0 N' J9 t5.39.217.76
6 c1 h8 w, @( `. h6 }; q {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
| 
發表於 2007-7-11 03:19 PM
| 
