原帖由 prozzy 於 2007-5-18 23:05 發表。 
9 r: h$ a# q8 _/ \* r! Swww3.tvboxnow.comthe answer is -$97 for sure. tvb now,tvbnow,bttvb8 M, v/ ?# _( U, L9 f S& g
Think about it this way
. c. d) S2 t5 A& w: }/ q7 `tvb now,tvbnow,bttvb1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
* F( h- C* q4 x1 P4 O2) Now, the owner discovered that the 100 bucks is fake. You can th ...
% L% A! @% T1 ~& q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 wrongwww3.tvboxnow.com4 t w, o7 B, H) ]& _, y7 k
: E3 ]4 Y: ?( E3 M; \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.
2 c& @3 k) R! o: a3 ~. ltvb now,tvbnow,bttvb 2 y. k! d' X" N# J+ l: ?1 w& j8 E
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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