the answer is -$97 for sure.
# m8 V* K$ E' |4 |6 \2 ]5.39.217.76Think about it this way
+ {5 \" V1 g( c* @3 g公仔箱論壇1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)4 e2 e' \! I- Q$ t+ @# W, @
2) Now, the owner discovered that the 100 bucks is fake. You can think this as a lost of $100. therefore the overall gain is $3-$100 = -$97 |
發表於 2007-5-16 03:12 AM
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發表於 2007-5-19 03:21 PM
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發表於 2007-5-21 03:49 AM
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