原帖由 prozzy 於 2007-5-18 23:05 發表。  * N0 W# P/ i/ a' h1 b! M* Z
the answer is -$97 for sure.
* m5 N3 q0 C: p; N- \( ^tvb now,tvbnow,bttvbThink about it this way
7 B8 K* o& w# o9 S; D5.39.217.761) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
3 F+ \ ?. n( d1 q7 {$ U, atvb now,tvbnow,bttvb2) Now, the owner discovered that the 100 bucks is fake. You can th ...
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公仔箱論壇7 k' |. y6 q5 a. L# \ g$ k
1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
& G3 c7 L, t$ p2 a- B& |5.39.217.76
( q4 O+ ~: R# h2 m9 P( E- l% b公仔箱論壇think about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.
6 o8 ^, Z0 z9 _+ a* h, A公仔箱論壇 ( R5 @8 _; M$ L+ X
I 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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