
To find: How much mixture should be drained and replaced with pure antifreeze to make desired solution.

Answer to Problem 40AYU
Explanation of Solution
Given information:
The cooling system capacity is
Initially system is filled with
Calculation:
As per the given information −
The cooling system capacity is
Initially system is filled with
Let us suppose
So, total amount of antifreeze drained will be
Amount of antifreeze left in the system
Drained amount of mixture is replaced by same amount of pure antifreeze.
Now amount of antifreeze in the system
Solution is
Hence,
Chapter A Solutions
Precalculus
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