1 cup = 8 fluid ounces5 cups = 40 fluid ouncesregardless of what's in the cups.Even if they're empty.
0.12 cup
Since a cup is 8 oz. 5 oz would equal 5/8ths of a cup.
85
1 cup = 8 fluid ounces, regardless of what's in the cup. Even if it's empty.