20080911, 13:27  #1 
Oct 2004
Austria
7×353 Posts 
The missing dollar
I hope, this one has not yet been posted here:
Three brothers go shopping and have to pay 30$. So the brothers give 10$ each. A few minutes after they have left the shop, the salesman sees that he has miscalculated, and the bill is actually 25$. So he gives 5$ to his apprentice and tells him to give the money to the brothers. On his way, the apprentice sees that 5$ is not divisible by 3. So he takes 2$ and gives one dollar to each brother. So now each brother has payes 9$, which sums up to 3*9=27$. The apprentice has taken 2$, so we are at 3*9+2=29$ Where is the missing dollar? 
20080911, 13:31  #2 
Undefined
"The unspeakable one"
Jun 2006
My evil lair
2×3×5×193 Posts 
The 3 men pay a total of $27, of which $2 goes to the assistant and $25 goes to the salesman.
Last fiddled with by retina on 20080911 at 13:32 
20080911, 13:36  #3 
Jul 2008
MA, USA
2^{3} Posts 
You say:
So now each brother has pay 9$, which sums up to 3*9=27$. The apprentice has taken 2$, so we are at 3*9+2=29$ These are different terms though. You cant consider how much the brothers 'paid' and how much the apprentice has now. You have to consider how much money everyone has at the end. The brothers each have $1 at the end, the apprentice $2 and the salesman $25 so 1*3 + 2 + 25 = 30 
20080911, 14:27  #4 
Oct 2004
Austria
7×353 Posts 
You both are right.

20080911, 14:56  #5 
1976 Toyota Corona years forever!
"Wayne"
Nov 2006
Saskatchewan, Canada
2^{3}×7×79 Posts 
Actually, I'm almost certain the IRS has the other dollar.

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