SOLUTION: How many gallons of a 4% acid solution should be mixed with 30 gallons of a 14% acid solution to obtain a mixture that is 8% acid?

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Question 633812: How many gallons of a 4% acid solution should be mixed with 30 gallons of a 14% acid solution to obtain a mixture that is 8% acid?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

How many gallonshighlight%28x%29 of a 4% acid solution should be mixed 

with 30 gallons of a 14% acid solution to obtain a mixture that is 8% acid?

  acid = acid

 .04x + .14·30 = .08(30-x)  |Solve for x, may first multiply thru by 100 if you like