SOLUTION: Ashwin has 500 mL of a 60% solution of silver nitrate. How many milliliters of 30% silver nitrate solution should be added to obtain a 50% solution?

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Question 1120807: Ashwin has 500 mL of a 60% solution of silver nitrate. How many milliliters of 30% silver nitrate solution should be added to obtain a 50% solution?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
x, the volume of the 30% silver nitrate to add

30x%2B60%2A500=50%28x%2B500%29

Not a system needed. Just one variable necessary.
Account for amount of pure silver nitrate.