CREATE TABLE table_204_145 (id DECIMAL, "representative" TEXT, "state" TEXT, "district ( s ) " TEXT, "served" TEXT, "party" TEXT, "date of birth" TEXT, "date of death" TEXT, "age" TEXT)

what was the average age of the first three on the list ?
SELECT AVG("age") FROM table_204_145 WHERE id <= 3
SELECT AVG("age") FROM "table_204_145" WHERE "id" <= 3