原帖由 prozzy 於 2007-5-18 23:05 發表。  公仔箱論壇1 k2 Z% g8 m1 [8 A8 {
the answer is -$97 for sure. ( `2 ~% `6 M# F& S
Think about it this way 公仔箱論壇# x$ z b& F) N) Z3 o e
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
+ J4 x# o# b' x2) Now, the owner discovered that the 100 bucks is fake. You can th ...
tvb now,tvbnow,bttvb! b2 t) O' C2 G& a v. S2 l
/ Y* Y6 \6 _& B. u6 \5.39.217.761) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
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; [+ g; ^2 \/ s& e; D# p. X4 Vthink 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.
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& P" J! M8 o* a7 u k& Ntvb now,tvbnow,bttvbI know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |
發表於 2007-7-10 05:18 PM
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發表於 2007-7-11 03:19 PM
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