SOLUTION: A chemist needs to mix a 20% acid soultion with 9 liters of a 47% acid solution to obtain a new mixture that is a 29% acid solution. How many liters of a 20% acid soultion can be u

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Question 597457: A chemist needs to mix a 20% acid soultion with 9 liters of a 47% acid solution to obtain a new mixture that is a 29% acid solution. How many liters of a 20% acid soultion can be used?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
.47*9+.20x=.29*(9+x)