Three ladies go to a restaurant for a meal. They receive a bill
for $30. They each put $10 on the table, which the waiter collects
and takes to the till. The cashier informs the waiter that the bill
should only have been for $25 and returns $5 to the waiter in $1
coins. On the way back to the table the waiter realizes that he
cannot divide the coins equally between the ladies. As they didnt
know the total of the revised bill, he decides to put $2 in his own
pocket and give each of the ladies $1.
Now that each lady has been given a dollar back, each of the ladies
has paid $9. Three times 9 is 27. The waiter has $2 in his pocket.
Two plus 27 is $29. The ladies originally handed over $30. Where is
the missing dollar?
