SOLUTION: Suppose that x liters of pure acid (100% acid) are added to 280 liters of a 25% acid solution. How many liters of pure acid should be added to produce a mixture that is 51% acid?

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Question 457662: Suppose that x liters of pure acid (100% acid) are added to 280 liters of a 25% acid solution. How many liters of pure acid should be added to produce a mixture that is 51% acid?
Answer by jorel1380(3719) About Me  (Show Source):
You can put this solution on YOUR website!
x+280(.25)=.51(280+x)
x+70=142.8+.51x
.49x=72.8
x=72.8/.49=148.57
You need 148.57 liters of pure acid for your mix..