原帖由 prozzy 於 2007-5-18 23:05 發表。 tvb now,tvbnow,bttvb9 A; J2 x& e0 N# ]- @; `5 n
the answer is -$97 for sure. 2 ]! {3 R8 l$ L8 ?
Think about it this way 4 u0 y% f3 i- m* ?
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
; d; m# ^" ^3 v) i J% O. w. ?' W8 D. |tvb now,tvbnow,bttvb2) Now, the owner discovered that the 100 bucks is fake. You can th ... tvboxnow.com1 S9 h7 L- A& w
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1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrongtvboxnow.com# P2 ?" f- A1 }2 {
4 T7 d3 O- e7 mthink 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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I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |