原帖由 prozzy 於 2007-5-18 23:05 發表。 tvb now,tvbnow,bttvb: U7 I* g- a4 \1 Q" K8 r$ U3 Q
the answer is -$97 for sure.
/ K' W) I' a$ EThink about it this way
. g3 Y2 p( r9 ?6 Z1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)tvb now,tvbnow,bttvb9 M, t3 [+ G2 Q4 g' G( c, z
2) Now, the owner discovered that the 100 bucks is fake. You can th ... 9 S0 t9 {6 u7 l公仔箱論壇tvb now,tvbnow,bttvb, y( t7 y6 d- n# ~+ L1 a
tvb now,tvbnow,bttvb- m- z, K2 s5 B- H" G: K! N
1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrongTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。( }$ x1 M# v- ~5 p, S( W
公仔箱論壇* _) f" Y4 o% X' ~( E" \! e
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.
+ k; M% W" Q/ t. Y7 v) F. O5.39.217.76
1 q* X; m" X9 i* r3 s8 f2 n2 rTVBNOW 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. |