Brain Teasers wanted

[Gin 'n Tonic]

Not sure how well known this one is, but it's one of my favourites:

Three ladies have their regular lunch at their local restaurant. When they are finished the bill comes to $30 and they each hand the waiter a ten dollar bill.

When the waiter takes the money to the till, the restaurant owner reminds him that there’s a special today with a $5 discount - the bill should only come to $25. The owner puts the $30 in the till and hands the waiter 5 singles to return to the ladies.

On the way to the table, the waiter realizes that he can’t divide up the five singles evenly between the three ladies and also he’s pissed because they never tip – so he slips $2 into his pocket and goes back to the table with the remaining $3.

“Good news ladies” He says. “There’s a 10% discount today – so you all get back a dollar each” and he hands each lady back a dollar.

Now each lady has now paid $9 for the meal, 3x$9 = $27 and there’s $2 in the waiter’s pocket. That makes a total of $29 – what happened to the extra $1 from the original $30 bill?

Enjoy...