原帖由 prozzy 於 2007-5-18 23:05 發表。 
5 M: U; S, i- _- T( @) Q1 ctvb now,tvbnow,bttvbthe answer is -$97 for sure. tvb now,tvbnow,bttvb. ^0 L9 j* A7 g! X' f. x. _. T
Think about it this way tvb now,tvbnow,bttvb, k2 o0 t- C0 A* W" L
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)+ k8 l9 s' {+ U3 N+ `
2) Now, the owner discovered that the 100 bucks is fake. You can th ...
5.39.217.76 t3 A: C/ F- \' {2 O, T
1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrongtvb now,tvbnow,bttvb1 e8 g8 {+ f) Q- V5 P
) V& M! T3 ]% F6 K% {' K" @! V* Z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.5.39.217.76) t+ \* d6 ]; `4 D
& [- \! |+ g6 P5.39.217.76I 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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