That is hard to say, grapes come in many sizes.
4 ounces
8 oz
That is 3.3 ounces
25
There are 16 ounces in a pound. Sixty-four Ounces divided by 16 ounces (one pound) equals four. You bought four pounds of grapes.
151 Grams of grapes are in one cup.
16 x 3 = 48 ounces
25 ounces = 1.563 pounds
That is 25 cups.
25 ml = 0.845 US fluid ounces.
25 ounces of water is 50 tablespoons
25 pounds is 400 ounces.