the answer is -$97 for sure. www1.tvboxnow.com/ R5 v, W$ i' d9 w4 W
Think about it this way
) Y* @( R, T& e, s; B- @$ r$ B' x1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18): A& }2 l- p: t/ Z3 \
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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