SOLUTION: how much water should you add to 150 ml of a 25% salt solution to make the solution 15% salt?

Question 227894: how much water should you add to 150 ml of a 25% salt solution to make the solution 15% salt?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = ml of water to be added
In words:
(final ml of salt)/(final ml of salt + water) = 125%
Initially I have:
ml salt in solution
I can now write my equation:

Multiply both sides by

ml
100 ml of water needs to be added
check:

OK
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