# Challenge 81

## Surprise at the restaurant

Difficulty level:

Three friends went to eat in a restaurant and in the end the bill gave $30.00. They did the following: each gave$ 10.00. The waiter took the money to the cashier and the restaurant owner said the following:
- "These three are old customers of the restaurant, so I will return $5 for them… " And handed the waiter five coins of$ 1.00. The clever waiter did the following: he took $2 for him and gave$ 1 for each of his friends. In the end each of the friends paid the following:
$10.00 -$ 1.00 that was returned = $9.00. So if each of us spent$ 9, what the three of us spent together was $27. And if the waiter took him$ 2.00, we have:
Us: R $27,00 Waiter:$ 2.00
TOTAL: R $29.00 Question: where did the other$ 1.00 go ???