原帖由 prozzy 於 2007-5-18 23:05 發表。 5.39.217.76% b0 Q7 f9 [% m8 Q$ @
the answer is -$97 for sure.
8 ^7 j" v; r1 i# P* [1 \公仔箱論壇Think about it this way
1 m$ _" t) B( H9 w5 C1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
& ]) W$ }8 O( @) ]. G! N& [tvb now,tvbnow,bttvb2) Now, the owner discovered that the 100 bucks is fake. You can th ... - V4 X1 I! I# D( o
, J5 h- G* P9 z. q3 R- e, g5.39.217.76 ( W$ {* J' r4 F! T) Q- P C) E
1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong' M" w" X2 ^, m8 p
/ l; ?+ W2 ]0 }. H' r/ Xthink about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。7 H0 o9 ~# A9 e D) R4 J- K
" l4 z7 O3 _( S4 a$ a$ ^+ atvb now,tvbnow,bttvbI know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |