原帖由 prozzy 於 2007-5-18 23:05 發表。 # H/ k( \6 e7 C+ F K. `5 g- C5 y
the answer is -$97 for sure.
0 G% l* Y' l/ h" v/ MTVBNOW 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。Think about it this way
! z" u- L. H3 i4 U9 ?8 _, I. V) p1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
( B k9 N. Z2 [0 t2 `. I公仔箱論壇2) Now, the owner discovered that the 100 bucks is fake. You can th ... 7 T; w9 Q. B$ f9 ]1 N: ^, l9 M# lTVBNOW 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。$ V8 s8 @; t: n( c
- a6 N8 U( L' dwww3.tvboxnow.com1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
( X* [$ U" K& k, I$ Ftvb now,tvbnow,bttvb ! x- v+ d! Y6 W* n
think about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.
) C, U8 @: {3 D+ }' Dwww3.tvboxnow.com TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。- G L7 ^$ i1 F# _/ S, V( o7 h: {
I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |