CREATE TABLE table_30079 ("Player" CLOB, "Played" FLOAT, "Legs Won" FLOAT, "Legs Lost" FLOAT, "100+" FLOAT, "140+" FLOAT, "180s" FLOAT, "High Checkout" FLOAT, "3-dart Average" CLOB)

What is the 3-dart average where the 140+ is 75?
SELECT "3-dart Average" FROM table_30079 WHERE "140+" = '75'
SELECT "3-dart Average" FROM "table_30079" WHERE "140+" = '75'