原帖由 prozzy 於 2007-5-18 23:05 發表。  5.39.217.76! B% c8 M1 R* B- n7 y2 t
the answer is -$97 for sure.
: i& ^ n4 k! O( S, s# \2 G/ e/ h9 A" TThink about it this way ; X' a4 [ |5 m, j2 T
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
8 x4 O1 P. {( ]/ C: [+ h5.39.217.762) Now, the owner discovered that the 100 bucks is fake. You can th ...
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" \+ b: }" V ?" V5.39.217.761) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong, U& D. b: P, l3 V
; {6 u! y1 F' _4 o+ n2 F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.
6 c" l) M- @6 ~6 c& H! Mtvb now,tvbnow,bttvb
: n6 w; [4 w( K+ ]" }' I8 jI 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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