SOLUTION: How many liters of water should be evaporated from 140 liters of a 12% saline solution so that the solution that remains is a 20% saline solution.

Question 705998: How many liters of water should be evaporated from 140 liters of a 12% saline solution so that the solution that remains is a 20% saline solution.
Found 2 solutions by josgarithmetic, josmiceli:
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
The saline quantity stays the same but the water keeping it in solution becomes less. w is water to remove.

find w.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = liters of water to be evaporated
liters of salt in 12% solution
--------------
You start with liters of salt,
and you finish with the same amount.

56 liters of water need to be evaporated
check:

OK

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