Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
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?
### Answer:
SELECT MIN(rank_by_average) FROM table_name_99 WHERE average = 23 AND total = 115