原帖由 prozzy 於 2007-5-18 23:05 發表。 " ^, R7 L$ ]6 V' m, Q
the answer is -$97 for sure.
8 O/ G6 R! x- Y/ C8 l( g2 N# J! {Think about it this way 公仔箱論壇4 _8 ^( D3 s4 @; q+ h
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
1 ?# R* ~4 @/ r) z* Z) W5.39.217.762) Now, the owner discovered that the 100 bucks is fake. You can th ... - ~& j0 { b$ b4 a% b" X9 {6 ]0 h公仔箱論壇
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! A+ k' T+ ]$ \1 Z. s! ~1 ]4 ftvb now,tvbnow,bttvb1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong1 h {' c+ g- L- F
8 S7 i2 v. O1 U, |; G2 c y公仔箱論壇think about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。" E l* d1 E+ a$ m
tvb now,tvbnow,bttvb A6 j! K8 U; M$ y
I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |