Despite what the paradox might say, there is no missing dollar. The wording of the paradox makes you want to believe that the equation for the missing dollar is simply 9×3+2=29. It is purposely misleading as to confuse the reader. The equation is wrong. The real equation is 10(the number of dollars per person) x 3(the number of people) = 25( the total value of the bill) + 3(the number of dollars returned to the lades) + 2(the number of dollars the waiter took as a tip.) This makes the equation 10×3=25+3+2. Both sides equal 30 dollars, meaning there is no missing dollar.
To make this even simpler: The price of the meal plus the waiters tip is 27 dollars. The last 3 dollars are returned to the men.