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September 21, 2014

September 21, 2014

Posted by **TJ** on Thursday, January 19, 2012 at 9:39pm.

- prpblem solving -
**DrBob222**, Thursday, January 19, 2012 at 10:01pmI think he lost $20 + the cost of the slippers. Or is this a trick question?

- prpblem solving -
**MathGuy1492**, Tuesday, July 29, 2014 at 1:27pmSuppose the merchant has only a $20 bill in his till. The customer comes in with the (counterfeit) $20, goes next door to the grocer and then gets, let's say, four $5 bills. He comes back and gives the customer three of those for his $15 change and then puts the fourth $5 bill in his till. This means, right now he is up $5 for $25 in his till. Later, the grocer next door comes in with the counterfeit bill and the merchant must give him $20, leaving $5 in his till. Considering he SHOULD have $25 in the cash register, I agree that he is out $20 [plus the cost of buying the slippers].

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