SOLUTION: a chemist has 200ml of a 52% acid solution. How much pure acid must be added to obtain 60% acid solution?

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Question 837871: a chemist has 200ml of a 52% acid solution. How much pure acid must be added to obtain 60% acid solution?
Answer by josgarithmetic(39616) About Me  (Show Source):
You can put this solution on YOUR website!
The concentrations must be assumed either w/v or v/v.

%28200%2A52%2Bx%2A100%29%2F%28x%2B200%29=60
Solve for x.