Asked by fAITH

A nurse wishes to to add water to 60 ounces of 20% solution of benzalkonium chloride to dilute it to an 8% solution. How many ounces of water does she need to add?

Answers

Answered by MathMate
Compare with the paint problem:
http://www.jiskha.com/display.cgi?id=1254846802
Answered by mimi
420 mL
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