What happened to the last dollar?
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You and two friends rent a hotel room that costs $30, so you put in $10 each. Later that night, the owner of the hotel realizes he has overcharged you so he sends the bellhop with $5. The bellhop steals $2 and returns $1 to each of you.
So you have each now paid $9. $9 x 3 = $27. The bellhop stole $2. That equals $29 – what happened to the last dollar?
The accounting method is wrong. The $2 is actually a part of the $27, and shouldn’t be added to it as stated in the problem.
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