原帖由 prozzy 於 2007-5-18 23:05 發表。 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。 H b7 U% \- z$ b& d( O/ F
the answer is -$97 for sure. 8 J z/ B0 S, F) J+ `
Think about it this way tvb now,tvbnow,bttvb6 ?+ A) N; o. L# B
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)公仔箱論壇( u3 F' }4 n. }% J; m( x; m
2) Now, the owner discovered that the 100 bucks is fake. You can th ... tvb now,tvbnow,bttvb+ W6 {& N, ]! `# s
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1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrongTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。( J7 i$ q! l8 [2 `7 m, P, h$ H5 u
0 Z8 a5 F3 [# M& b; A1 C1 E5.39.217.76think about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.
" o) ]% m; w% t$ KTVBNOW 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。 公仔箱論壇1 H8 N; R9 V2 D9 M& m
I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |