原帖由 prozzy 於 2007-5-18 23:05 發表。 公仔箱論壇/ D" v; u5 o' ?- W4 x
the answer is -$97 for sure. tvb now,tvbnow,bttvb2 Y- L. M- Q; \/ v Z0 I7 W
Think about it this way
1 L+ j1 h5 E2 r h. B1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)0 w8 q7 u; {" |; d3 V. E8 t+ O& v
2) Now, the owner discovered that the 100 bucks is fake. You can th ... - W( b0 Q# U, `/ U1 V2 Nos.tvboxnow.com v M; y7 S0 W2 w0 a7 U
os.tvboxnow.com6 \/ e f, x" o5 b. q: P# S
1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
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* Y: n5 n2 E' ^! g4 bTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。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.
" R' j0 ] d2 e公仔箱論壇
. w. P# W6 {+ u+ o6 W* U6 BTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |