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

Algebra ->  Percentage-and-ratio-word-problems -> 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       Log On


   

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) About Me  (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) About Me  (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: highlight_green%284%29 quarts