6 servings. 1/8 +1/8 is 2/8 or 1/4 of a pound. Meaning that after 2 serving we still have only 1/4 of the amount of grapes leaving us with 2/4 more. So we would need 4 more 1/8’s making it a total of 6 servings. 1/8+1/8+1/8+1/8+1/8+1/8=6/8 or simplified 3/4.
