SOLUTION: A radiator holds 6 quarts of fluid. if the current mixture contains 30% anti-freeze, how much fluid must be drained from the radiator so, when replaced with water, the new mixture

Question 969157: A radiator holds 6 quarts of fluid. if the current mixture contains 30% anti-freeze, how much fluid must be drained from the radiator so, when replaced with water, the new mixture contains 10% anti-freeze?
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39630) (Show Source): You can put this solution on YOUR website!
The radiator drain-and-replace problem - this is how they work.
http://www.algebra.com/my/drain-and-replace-antifreeze.lesson?content_action=show_dev
Answer by MathTherapy(10557) (Show Source): You can put this solution on YOUR website!

A radiator holds 6 quarts of fluid. if the current mixture contains 30% anti-freeze, how much fluid must be drained from the radiator so, when replaced with water, the new mixture contains 10% anti-freeze?

Amount of water: quarts
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