A cup is 8 ounces, so ... two and a half.
Note that these are measuring cups. I have no idea what size your actual cups are; it could reasonably anywhere from about 6-16 ounces.
1 cup is 8 oz. - So 20 oz is 2.5 cups.
That is 2.5 cups
1 cup is 8oz, so 20oz is 2.5 cups.
6.4 of them
That is about 20 cups.
40.
20 ounces of water is 2.5 cups
2.5 cups 1 cup = 8 ounces 1 ounce = 0.12 cup
20 cups
That is 20 cups
20 cups of water is approximately 4.536 Kg
20 ounces is 2.5 cups. This is because each ounce is about 0.125 cups, so multiplied by 20 is a total of 2.5 cups.
About 19 20-ounce bottles.
That is approximately 20 cups. imperial gallons to Canadian cups.
4.73176 liters.