Three men go to a restaurant. They order some foods. After they finished, they ask for the bill. The bill was **30$** . They pay the bill and leave the restaurant.

As soon as they leave, the manager find out that there was a miss calculation and they had to pay **25$** . 

He calls the waiter, give him the extra  **5\$**, and ask him to pass this money back to men. The waiter leaves the restaurant with **5\$** , but he pot 2% in his pocket and give each men **1$**.

So

Each man payed  $  10\$-1\$ = 9\$ $. 

Three man payed $ 9\$*3=27\$ $. 

The waiter has $ 2\$ $

The total is $ 27\$ + 2\$ = 29\$ $

Where is the  $ 1\$ $