SOLUTION: A radiator contains 13 quarts of fluid, 20% of which is antifreeze. How much fluid should be drained and replaced with pure antifreeze so that the new mixture is 50% antifreeze? (R

Question 511301: A radiator contains 13 quarts of fluid, 20% of which is antifreeze. How much fluid should be drained and replaced with pure antifreeze so that the new mixture is 50% antifreeze? (Round your answer to two decimal places.)

Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
The key is: you start with 13 quarts and you end up with
13 quarts.
Let = quarts of fluid to be drained
and replaced with pure antifreeze
given:
quarts of original antifreeze
= quarts of antifreeze drained off
-----------------

4.88 quarts of fluid should be drained and replaced with pure antifreeze
check:

OK
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