原帖由 prozzy 於 2007-5-18 23:05 發表。 
0 ]% O+ k" O4 A公仔箱論壇the answer is -$97 for sure.
: q% H" h! a+ _; h7 \( ~公仔箱論壇Think about it this way
4 L- K' i: N& M: o公仔箱論壇1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
n1 [1 Z6 u0 G9 g% [/ C# htvb now,tvbnow,bttvb2) Now, the owner discovered that the 100 bucks is fake. You can th ...
6 q z, I5 v, g3 c( y1 {- J( |% d a tvb now,tvbnow,bttvb" ^$ E. |7 P* M
1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
; w; I, z0 z8 W, K( Q6 N: E9 ptvb now,tvbnow,bttvb 8 R6 t2 P2 r* \
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.6 I5 H( Q7 v4 E
" N! e8 t# ` R/ S) {/ b" N公仔箱論壇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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