( X 10) + ( X 1) = 19 dollars
( X 10) + ( X 1) = 27 dollars
( X 10) + ( X 1) = 30 dollars
( X 10) + ( X 1) = 45 dollars
( X 10) + ( X 1) = 53 dollars
( X 10) + ( X 1) = 61 dollars