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Old 2008-09-11, 13:27   #1
Andi47
 
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Oct 2004
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Wink 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?
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Old 2008-09-11, 13:31   #2
retina
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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 2008-09-11 at 13:32
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Old 2008-09-11, 13:36   #3
sps27
 
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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
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Old 2008-09-11, 14:27   #4
Andi47
 
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You both are right.
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Old 2008-09-11, 14:56   #5
petrw1
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Actually, I'm almost certain the IRS has the other dollar.

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