Rachel will make juice drink by mixing sugar, pineapple juice, and water in the ratio of 2:5:7 cups. If she uses 20 cups of pineapple juice, she has to mix ____ cups of sugar and ____ cups of water to the juice

Answer 1

multiply all the values by 4, so you have

8:20:28

Now you can see the quantities that go with 20 cups of pineapple juice.

Answer 2

8, 20