SOLUTION: A chemist has one solution of acid and water that is 75% acid and another solution that is 15% acid. How many gallons of 75 % are needed to make 85 gallons of a 45% acid solution?

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Question 889448: A chemist has one solution of acid and water that is 75% acid and another solution that is 15% acid. How many gallons of 75 % are needed to make 85 gallons of a 45% acid solution?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
45 is the average, so it's equal amounts.