Well, 4 cups = 1 quart, so 4 *6= 24 cups in 6 quarts of lemonade.
Red apples to all apples:
There are 6 red apples and 13 apples total, so the ratio it 6:13
Green Apples to All Apples:
There are 7 green apples and 13 apples total, so the ratio is 7:13.