SOLUTION: What is the ratio must coffee is combined with water to obtain 20% by marketing the combination at pricing?

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Question 1001526: What is the ratio must coffee is combined with water to obtain 20% by marketing the combination at pricing?
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
Please rephrase this in proper English.
Right now I'm thinking that you need a 20% solution of coffee.
If that is true, you'll need four parts water for one part coffee.