SOLUTION: Julio wants to make 10 fluid ounces of a 56% saline solution by mixing together a 40% saline solution and a 60% saline solution. How much of each solution must he use?

Question 703184: Julio wants to make 10 fluid ounces of a 56% saline solution by mixing together a 40% saline solution and a 60% saline solution. How much of each solution must he use?
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
The description and question make no physical sense, but here is the arithmetic:

d for 40% solution, u for 60% solution.

Want to have 10 fluid ounce, so . If multiply both sides of this one by 2, we get equivalent equation, .

If we now subtract from , we get u = 8 fluid ounces. value for d can be easily computed.
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