Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_99 (rank_by_average INTEGER, average VARCHAR, total VARCHAR)

### Question ###
What was the lowest rank by average of a couple who had an average of 23 and a total of 115?

### Accurate SQL ###

SELECT MIN(rank_by_average) FROM table_name_99 WHERE average = 23 AND total = 115