原帖由 prozzy 於 2007-5-18 23:05 發表。 
' m" q9 r9 m( G k9 B! O% etvb now,tvbnow,bttvbthe answer is -$97 for sure. 公仔箱論壇* k% {% p5 f! O* {
Think about it this way
2 x& W* b: x# u* F# L* U( B! \1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)公仔箱論壇 @4 X- Q/ R' E% m& g& q# L
2) Now, the owner discovered that the 100 bucks is fake. You can th ...
0 S! _0 F9 [) X# S9 ^www1.tvboxnow.com tvb now,tvbnow,bttvb' U" \9 P. g$ @7 \
1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
3 K, h+ z6 m1 ~ Q6 w tvb now,tvbnow,bttvb* B( `8 e- z" g& ^ s6 D
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.tvb now,tvbnow,bttvb) {& R1 k; {* y* j4 J& } r
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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. |
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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