SOLUTION: How many liters of 50% acid and 20% acid should be mixed to obtain an acid solution that is 25% acid?

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Question 716553: How many liters of 50% acid and 20% acid should be mixed to obtain an acid solution that is 25% acid?
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
Amount of mixture or resulting solution is V.
Let x amount of 50% and let y amount of 20%,

%2850x%2B20y%29%2FV=25 and x%2By=V

For convenience you can choose V as 1 or V as 100 or you can choose V as any value you want for the size of the resulting solution. V is any size you want or need it to be.