原帖由 prozzy 於 2007-5-18 23:05 發表。  tvb now,tvbnow,bttvb( U; ^, A0 l2 n
the answer is -$97 for sure.
- I) x8 g( ?5 O+ m N公仔箱論壇Think about it this way 5.39.217.76" v3 l+ {8 ^) `0 Q
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
* e: m: f: w- f公仔箱論壇2) Now, the owner discovered that the 100 bucks is fake. You can th ...
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$ B- E9 b0 n6 o0 J n公仔箱論壇1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
- m" g) l8 h& U* K5 g1 x5.39.217.76
8 y- D/ |6 j1 }0 b0 X( g3 Q1 ?公仔箱論壇think about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.
5 f8 B( ?' _7 k! h, M* m4 L1 M' H5.39.217.76 , x) ?4 w% H$ |9 o$ ~3 {
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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