SOLUTION: How many liters each of a acid solution and a 65% acid solution must be used to produce 50 liters of a 45% acid solution?

Question 743545: How many liters each of a acid solution and a 65% acid solution must be used to produce 50 liters of a 45% acid solution?
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
"How many liters each of a acid solution and a 65% acid solution..."

What is the other acid solution? What concentration? You want a result of 45% acid but you want to mix two different acid solutions; you know one of them but not the other. The other acid solution must be lower than 45%. Are you only making a dilution of the 65% acid with water, or are you really planning for mixing TWO acid solutions? This makes a difference.

Assuming you have 65% and some other L% acids, and , and if you want u liters of L% and v liters of 65%, then you make equations:
and .
and you can solve the system for u and v. You still have no given value for L.
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