SOLUTION: How many gallons of a 30% salt solution must be added to 5 gallons of a 10% salt solution to yield a solution that is 17.5% salt?

Question 1112774: How many gallons of a 30% salt solution must be added to 5 gallons of a 10% salt solution to yield a solution that is 17.5% salt?
Answer by ikleyn(52835) (Show Source): You can put this solution on YOUR website!
.
It is extremely attractive and interesting problem,

but even more interesting is the fact that such salt solution (30% salt solution) does not exist in the nature.

Learn Science while in the school, and you will know many interesting things.

As a reference, see this Wikipedia article

    https://en.wikipedia.org/wiki/Saline_water

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