SOLUTION: A radiator contains 6 quarts of fluid, 15% of which is antifreeze. How much fluid should be drained and replaced with pure antifreeze so that the new mixture is 60% antifreeze? (Ro

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Question 798089: A radiator contains 6 quarts of fluid, 15% of which is antifreeze. How much fluid should be drained and replaced with pure antifreeze so that the new mixture is 60% antifreeze? (Round your answer to two decimal places.)
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Let v = how many quarts to drain and replace

%286%2A15-v%2A15%2Bv%2A100%29%2F6=60
%286%2A15%2B%28100-15%29v%29%2F6=60
Solve for v.