SOLUTION: how many ounces of pure water should be added to 30ounces of a 50% solution of muratic acid to obtain a 25% solution of muratic acid?

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Question 195681: how many ounces of pure water should be added to 30ounces of a 50% solution of muratic acid to obtain a 25% solution of muratic acid?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
how many ounces of pure water should be added to 30ounces of a 50% solution of muratic acid to obtain a 25% solution of muratic acid?
:
Let x = amt of pure water required
:
write an amt of acid equation
.50(30) = .25(x+30)
15 = .25x + 7.5
15 - 7.5 = .25x
x = 7.5%2F.25
x = 30 oz of water required, which is what you would expect, right?