SOLUTION: a 10 quart radiator contains 25% antifreeze sol. how much must be drained away and be replaced with pure antifreeze to raise the solution to 70%?

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Question 948444: a 10 quart radiator contains 25% antifreeze sol. how much must be drained away and be replaced with pure antifreeze to raise the solution to 70%?
Answer by josgarithmetic(39617) About Me  (Show Source):