skybirds

原帖由 prozzy 於 2007-5-18 23:05 發表。 8 N( ~* o0 M: I& ^6 ], G
the answer is -$97 for sure.   ~( K1 u7 H- `& M9 E* Z% \1 N
Think about it this way tvb now,tvbnow,bttvb+ ~- P  b7 t3 w: i( u9 {$ q
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)/ Y& I3 h" h- v( J0 C
2) Now, the owner discovered that the 100 bucks is fake. You can th ...

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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 wrong公仔箱論壇! Q* C: ?# b. [) \8 O

: g2 S1 a! ?2 O- _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.
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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.

skybirds

??? 369258 ? 2007-6-28 23:29 ??? tvb now,tvbnow,bttvb9 P, P  k- c  c/ v  q* n3 O

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dun forget that guy, not only the $18 dollars product he got on hand, he also got $79 dollars on this hand, he paid a fake 100 dollars bill, it means he paid nothing, and the boss gets nothing too, so u need to add 79 dollars to the total.

230km/hr

97

joey80

179+18tvb now,tvbnow,bttvb8 S% }0 z/ v" i7 B. ]
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[ 本帖最後由 joey80 於 2007-7-11 07:08 AM 編輯 ]

skydn

118

mkcjojo

??

fisherdai

18+79=97

wuchingching

not 97 ma ?

mibird

197

kent8118

Thanks for sharing!!!