[Orefsmisits]

I, You and he go to

restaurant and in the end the account gave $30. We made the following one:
each one gave ten dollars.
I:$10


You: $10
He:$10
The waiter took the money until the box and the owner of the restaurant said the following

one: - These three are old customers of the restaurant, then I go to return $5 for them!
The waiter delivered

five notes of $1.
The waiter, very smart, made the following one:
he caught $ 2 for himself and he gave $1 for

each one of us. In the end :
I: $10 (- $1 that was returned) = I spent $9.
You: $10 (- $1 that was returned)

= You you spent $9.
He: $10 (- $1,00 that was returned) = He spent $9.
Soon, if each one of us spent $9 what

we three spend together $27.
If the waiter caught $2 for himself, then
We: $27
Waiter: $2:
TOTAL : $29


The question:
Where is the other $1?

--Department of Economy of the PUC.