CREATE TABLE table_48988 ("Position" FLOAT, "Team" TEXT, "Played" FLOAT, "Drawn" FLOAT, "Lost" FLOAT, "Goals For" FLOAT, "Goals Against" FLOAT, "Goal Difference" TEXT, "Points 1" FLOAT)

What is the average goals for that has +40 as the goals difference, with points 1 greater than 55?
SELECT AVG("Goals For") FROM table_48988 WHERE "Goal Difference" = '+40' AND "Points 1" > '55'
SELECT AVG("Goals For") FROM "table_48988" WHERE "Goal Difference" = '+40' AND "Points 1" > '55'