原帖由 prozzy 於 2007-5-18 23:05 發表。 tvb now,tvbnow,bttvb5 D2 k' _5 } X+ Q1 m
the answer is -$97 for sure.
5 K8 U0 \+ S; BThink about it this way
1 F! Q* M$ [0 w2 r0 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。1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
q8 Y% k5 V( g& ]7 f( F! S2) 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。! m* X! U- c+ u0 B& m4 s
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。! M: u1 I- Z& D: a; h" r" r! I
( d0 t: U! l5 W% r; z1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrongtvb now,tvbnow,bttvb) z6 v; K+ e! B( c2 P3 y
tvb now,tvbnow,bttvb9 n" G( G& f! [1 I) C- r
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.5.39.217.760 C9 f; X6 S' ]8 R
公仔箱論壇* _" J: M: |! M9 i
I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |