The ratio of drink mix to mixed energy drink is 3:11
8 cups water
3 cups drink mix
We already know the amount of drink mix because the problem gives it to us (3 cups)
As for the amount of mixed energy drink we have to add the two values to get the total.
8 + 3 = 11
Hence the ratio of drink mix to mixed energy drink is 3:11
hope that helps :)