原帖由 prozzy 於 2007-5-18 23:05 發表。 
# F; ^8 }4 n& p J* j" K/ M; C公仔箱論壇the answer is -$97 for sure.
) H8 R2 _/ {' GThink about it this way
% Q' Q6 }( t v8 Y" }# B$ Ntvb now,tvbnow,bttvb1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)5.39.217.76- v4 R/ z6 M" e8 ~( U2 D
2) Now, the owner discovered that the 100 bucks is fake. You can th ...
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) _1 O" q- T$ W, B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# a5 b, t6 `. q1 v
: V+ A& ]5 ^7 Y1 O9 Z: `公仔箱論壇think about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.
' H/ e3 p% i& D. U& h' Btvb now,tvbnow,bttvb
. Z3 z0 ?" ~& E7 q$ SI 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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