SOLUTION: A radiator contains 15 gal of 40% antifreeze solution. How many gallons must be drained from the radiator and replaced by pure antifreeze so that the radiator will contain 15 gal o

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Question 990965: A radiator contains 15 gal of 40% antifreeze solution. How many gallons must be drained from the radiator and replaced by pure antifreeze so that the radiator will contain 15 gal of a 55% antifreeze solution?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Study this lesson very carefully for this common exercise mixture type:
http://www.algebra.com/my/drain-and-replace-antifreeze.lesson?content_action=show_dev