CREATE TABLE table_name_8 (points NUMBER, time_retired VARCHAR2, laps VARCHAR2)

How many average points did the player with a time/retired of +16.789 and have more laps than 68 have?
SELECT AVG(points) FROM table_name_8 WHERE time_retired = "+16.789" AND laps > 68
SELECT AVG("points") FROM "table_name_8" WHERE "+16.789" = "time_retired" AND "laps" > 68