原帖由 prozzy 於 2007-5-18 23:05 發表。 
& c9 f( B. P: T5.39.217.76the answer is -$97 for sure.
) F% j$ u- v7 t) Ctvb now,tvbnow,bttvbThink about it this way
+ D% M4 A( z( J+ g4 f& n8 r" ^$ \" ztvb now,tvbnow,bttvb1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
* r% N8 f8 z' U6 O# |- }* uTVBNOW 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。2) Now, the owner discovered that the 100 bucks is fake. You can th ... & f; N: E3 T; [. O0 f
1 S1 o e) q- x6 |7 i) f4 M2 `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。
3 [* ?9 [ q8 ?% k9 F- j) ITVBNOW 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。1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
0 r* f: _) t7 j* \( c& s- A& g5.39.217.76
0 t4 O9 @, F; A9 s# t# u7 G5.39.217.76think about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.
8 e5 q6 r( @3 M3 YTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。
8 _( @& o5 y, _$ I; P6 o6 m1 a u" HI know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |