SOLUTION: how much pure acid should be mixed with 4 gallons of a 60% acid solution in order to get an 80% acid solution? to get a 80% acid solution, you need how many gallons need of pure a

SOLUTION: how much pure acid should be mixed with 4 gallons of a 60% acid solution in order to get an 80% acid solution? to get a 80% acid solution, you need how many gallons need of pure a

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Question 378048: how much pure acid should be mixed with 4 gallons of a 60% acid solution in order to get an 80% acid solution? to get a 80% acid solution, you need how many gallons need of pure acid?

Answer by robertb(5830) (Show Source): You can put this solution on YOUR website!
0.60*4 +x = 0.80(4 + x),
2.4 + x = 3.2 + 0.80x;
-0.80 = -0.20x;
x = 4 gallons of pure acid that had to be added.
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