CREATE TABLE table_32980 ("Rank by average" FLOAT, "Place" FLOAT, "Couple" TEXT, "Total" FLOAT, "Number of dances" FLOAT, "Average" FLOAT)

What was the lowest rank by average of a couple who had an average of 23 and a total of 115?
SELECT MIN("Rank by average") FROM table_32980 WHERE "Average" = '23' AND "Total" = '115'
SELECT MIN("Rank by average") FROM "table_32980" WHERE "Average" = '23' AND "Total" = '115'